Grade 3

1. Counting and numbers to 100,000

Counting and numbers to 100,000

• Easy Practice foundations e.g. Complete the missing number (change by 1 each time): 39,998, 39,999, __, 40,001 —Accuracy · last 5 attempts
• Normal Connect representations and check understanding e.g. Complete the missing number (change by 1000 each time): 52,000, 53,000, __, 55,000 —Accuracy · last 5 attempts
• Hard Reason and analyze errors e.g. A child appends 10 after 39,999 and writes 3999910. What is wrong? —Accuracy · last 5 attempts

2. Reading and writing numbers Member only

Reading and writing numbers

• Easy Practice foundations e.g. How do you read 41,263? —Accuracy · last 5 attempts
• Normal Connect representations and check understanding e.g. How do you read 10,204? —Accuracy · last 5 attempts
• Hard Reason and analyze errors e.g. A child writes “thirty thousand four hundred” as 34,000. Which correction is right? —Accuracy · last 5 attempts

3. Digit places and place values Member only

Digit places and place values

• Easy Practice foundations e.g. In 41,765, which place contains digit 5? —Accuracy · last 5 attempts
• Normal Connect representations and check understanding e.g. Ten ones equal how many tens? —Accuracy · last 5 attempts
• Hard Reason and analyze errors e.g. A nonzero digit moves one place left. Its value becomes how many times its old value? —Accuracy · last 5 attempts

4. Digit values and expanded forms Member only

Digit values and expanded forms

• Easy Practice foundations e.g. What is the value of digit 5 in the ones place of 63,215? —Accuracy · last 5 attempts
• Normal Connect representations and check understanding e.g. In 99,205, do digit 9 in the ten-thousands and thousands places have equal values? —Accuracy · last 5 attempts
• Hard Reason and analyze errors e.g. What is the value of digit 5 in the thousands place of 75,628? —Accuracy · last 5 attempts

5. Comparing numbers Member only

Comparing numbers

• Easy Practice foundations e.g. Choose the sign: 9,457 __ 10,901 —Accuracy · last 5 attempts
• Normal Connect representations and check understanding e.g. Which is larger: 40,000 + 800 + 40 + 1 or 39,841? —Accuracy · last 5 attempts
• Hard Reason and analyze errors e.g. In 44_91 > 44,391, the gap is the hundreds digit. Select ALL valid digits. —Accuracy · last 5 attempts

6. Ordering numbers Member only

Ordering numbers

• Easy Practice foundations e.g. Order 26,928, 26,923, 27,049 from smallest to largest. —Accuracy · last 5 attempts
• Normal Connect representations and check understanding e.g. Order 64,697, 64,664, 64,665, 64,582 from smallest to largest. —Accuracy · last 5 attempts
• Hard Reason and analyze errors e.g. A child writes 33,034 < 32,934 although 33,034 is larger. How should it be corrected? —Accuracy · last 5 attempts

7. Number patterns Member only

Number patterns

• Easy Practice foundations e.g. Complete the missing number (change by 1 each time): 39,998, 39,999, __, 40,001 —Accuracy · last 5 attempts
• Normal Connect representations and check understanding e.g. Complete the missing number (change by 1000 each time): 45,000, 46,000, __, 48,000 —Accuracy · last 5 attempts
• Hard Reason and analyze errors e.g. Rule: add 1000. In 57,000, 58,000, 60,000, 60,000, which term is the first error? —Accuracy · last 5 attempts

8. Applying number sense Member only

Applying number sense

• Easy Practice foundations e.g. Use digits 3, 7, 6, 8, 9 exactly once each to construct one five-digit number. —Accuracy · last 5 attempts
• Normal Connect representations and check understanding e.g. Use digits 2, 8, 3, 9, 4 once each to construct the largest five-digit number. —Accuracy · last 5 attempts
• Hard Reason and analyze errors e.g. In 13,359, change the thousands digit from 3 to 4. How much does the number increase? —Accuracy · last 5 attempts

1. Addition without regrouping Member only

Practice arithmetic to 100,000 using place values and quantitative relationships

• Easy Practice reviewed forms with independently assessed item difficulty e.g. Find 33,356 + 2 = ? —Accuracy · last 5 attempts
• Normal Practice reviewed forms with independently assessed item difficulty e.g. Use expanded places for 11,214 + 35,772: what is the contribution from the thousands place? —Accuracy · last 5 attempts
• Hard Practice reviewed forms with independently assessed item difficulty e.g. Use expanded places for 11,214 + 35,772: what is the contribution from the thousands place? —Accuracy · last 5 attempts

2. Addition with regrouping Member only

Practice arithmetic to 100,000 using place values and quantitative relationships

• Easy Practice reviewed forms with independently assessed item difficulty e.g. 6 ones + 8 ones = 14 ones. How many tens and remaining ones? —Accuracy · last 5 attempts
• Normal Practice reviewed forms with independently assessed item difficulty e.g. Find 15,724 + 32,269 = ? —Accuracy · last 5 attempts
• Hard Practice reviewed forms with independently assessed item difficulty e.g. Find 37,165 + 5,151 = ? —Accuracy · last 5 attempts

3. Subtraction without regrouping Member only

Practice arithmetic to 100,000 using place values and quantitative relationships

• Easy Practice reviewed forms with independently assessed item difficulty e.g. Find 42,264 − 2 = ? —Accuracy · last 5 attempts
• Normal Practice reviewed forms with independently assessed item difficulty e.g. Use expanded places for 28,969 - 25,407: what is the contribution from the thousands place? —Accuracy · last 5 attempts
• Hard Practice reviewed forms with independently assessed item difficulty e.g. Use expanded places for 28,969 - 25,407: what is the contribution from the thousands place? —Accuracy · last 5 attempts

4. Subtraction with regrouping Member only

Practice arithmetic to 100,000 using place values and quantitative relationships

• Easy Practice reviewed forms with independently assessed item difficulty e.g. Why can 1 tens be exchanged for 10 ones without changing the number? —Accuracy · last 5 attempts
• Normal Practice reviewed forms with independently assessed item difficulty e.g. Find 47,893 − 37,739 = ? —Accuracy · last 5 attempts
• Hard Practice reviewed forms with independently assessed item difficulty e.g. Find 64,422 − 12,486 = ? —Accuracy · last 5 attempts

5. Addition and subtraction relationships Member only

Practice arithmetic to 100,000 using place values and quantitative relationships

• Easy Practice reviewed forms with independently assessed item difficulty e.g. If 29,200+18,700=47,900, what is 47,900−29,200? —Accuracy · last 5 attempts
• Normal Practice reviewed forms with independently assessed item difficulty e.g. Choose the complete related addition/subtraction family for 31,100, 11,200, 42,300 —Accuracy · last 5 attempts
• Hard Practice reviewed forms with independently assessed item difficulty e.g. Choose the complete related addition/subtraction family for 31,100, 11,200, 42,300 —Accuracy · last 5 attempts

6. Finding unknown values Member only

Practice arithmetic to 100,000 using place values and quantitative relationships

• Easy Practice reviewed forms with independently assessed item difficulty e.g. Find the blank: 5,000+□=13,000 —Accuracy · last 5 attempts
• Normal Practice reviewed forms with independently assessed item difficulty e.g. Find the missing number: 12500+□=35600 —Accuracy · last 5 attempts
• Hard Practice reviewed forms with independently assessed item difficulty e.g. Find the missing number: 12500+□=35600 —Accuracy · last 5 attempts

7. Estimation and reasonableness Member only

Practice arithmetic to 100,000 using place values and quantitative relationships

• Easy Practice reviewed forms with independently assessed item difficulty e.g. Estimate 48,100 + 17,800: which inclusive interval contains the result? —Accuracy · last 5 attempts
• Normal Practice reviewed forms with independently assessed item difficulty e.g. Estimate 32,600 + 13,000: which inclusive interval contains the result? —Accuracy · last 5 attempts
• Hard Practice reviewed forms with independently assessed item difficulty e.g. Estimate 32,600 + 13,000: which inclusive interval contains the result? —Accuracy · last 5 attempts

8. Addition and subtraction word problems Member only

Practice arithmetic to 100,000 using place values and quantitative relationships

• Easy Practice reviewed forms with independently assessed item difficulty e.g. Library A has 26,100 books and B has 8,700. How many altogether? —Accuracy · last 5 attempts
• Normal Practice reviewed forms with independently assessed item difficulty e.g. A shop has 28,900 items and receives 7,900 more. How many now? —Accuracy · last 5 attempts
• Hard Practice reviewed forms with independently assessed item difficulty e.g. A shop has 26,500, receives 11,300, then sells 3,900 items. How many remain? —Accuracy · last 5 attempts

1. Reading and telling time Member only

Practice clock reading, time units, durations and schedule problems

• Easy Practice foundations and questions at their reviewed difficulty e.g. What morning time does this clock show? Answer HH:MM. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. What morning time does this clock show? Answer HH:MM. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. What morning time does this clock show? Answer HH:MM. —Accuracy · last 5 attempts

2. Seconds and time-unit relationships Member only

Practice clock reading, time units, durations and schedule problems

• Easy Practice foundations and questions at their reviewed difficulty e.g. Which unit is suitable for the approximate duration of one blink? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Express 68 minutes as hours and remaining minutes. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Express 68 minutes as hours and remaining minutes. —Accuracy · last 5 attempts

3. Times and parts of the day Member only

Practice clock reading, time units, durations and schedule problems

• Easy Practice foundations and questions at their reviewed difficulty e.g. Which part of the day is 07:00 in 24-hour notation? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Are 8 in the morning (08:00) and 8 in the evening (20:00) the same clock point on the same day? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Are 8 in the morning (08:00) and 8 in the evening (20:00) the same clock point on the same day? —Accuracy · last 5 attempts

4. Finding elapsed time Member only

Practice clock reading, time units, durations and schedule problems

• Easy Practice foundations and questions at their reviewed difficulty e.g. From 08:00 to 12:00 on the same day, how many hours elapse? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. From 09:52 to 10:45 on the same day, how many minutes elapse? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. From 10:20 to 12:08 on the same day, how many hours and remaining minutes elapse? —Accuracy · last 5 attempts

5. Finding start and end times Member only

Practice clock reading, time units, durations and schedule problems

• Easy Practice foundations and questions at their reviewed difficulty e.g. Start at 07:00 for 180 minutes. What is the finish time on the same day? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Start at 12:49 for 37 minutes. What is the finish time on the same day? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Start at 12:30 for 117 minutes. What is the finish time on the same day? —Accuracy · last 5 attempts

6. Comparing and calculating durations Member only

Practice clock reading, time units, durations and schedule problems

• Easy Practice foundations and questions at their reviewed difficulty e.g. 24 minutes + 19 minutes: express the result as minutes. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 40 minutes + 33 minutes: express the result as hours and remaining minutes. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. 2 hours 13 minutes − 43 minutes: express the result as hours and remaining minutes. —Accuracy · last 5 attempts

7. Timetables and schedules Member only

Practice clock reading, time units, durations and schedule problems

• Easy Practice foundations and questions at their reviewed difficulty e.g. From the table, when does school start? Answer HH:MM. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Order the start times of school, morning break and lunch break. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Combine lessons before and after the morning break up to lunch. How many hours and minutes of lessons, excluding breaks? —Accuracy · last 5 attempts

8. Time word problems Member only

Practice clock reading, time units, durations and schedule problems

• Easy Practice foundations and questions at their reviewed difficulty e.g. A film starts at 15:20 and ends at 16:11 on the same day. How many minutes long is it? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. A bus arrives at 09:55 after traveling 60 minutes. When did it leave on the same day? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Read 30 minutes, rest 19, then read 38. How many minutes from start to finish, including the rest? —Accuracy · last 5 attempts

1. Reviewing and classifying 2D shapes Member only

Practice shape properties, folding, reflection and symmetric construction

• Easy Practice foundations and questions at their reviewed difficulty e.g. Select triangles from the figures. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Which category contains a closed figure with 4 straight sides and 4 vertices? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Which category contains a closed figure with 4 straight sides and 4 vertices? —Accuracy · last 5 attempts

2. Figures with and without line symmetry Member only

Practice shape properties, folding, reflection and symmetric construction

• Easy Practice foundations and questions at their reviewed difficulty e.g. What describes a figure with a fold line that makes its two parts coincide exactly? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. If folded along the dashed diagonal down-right line, do the parts coincide exactly? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. This center line divides equal areas, but folding does not make the halves coincide. Is it a symmetry axis? —Accuracy · last 5 attempts

3. Finding and counting symmetry axes Member only

Practice shape properties, folding, reflection and symmetric construction

• Easy Practice foundations and questions at their reviewed difficulty e.g. Select the set of lines to draw as the complete set of symmetry axes. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Select the set of lines that are diagonal symmetry axes. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Select the set of lines to draw as the complete set of symmetry axes. —Accuracy · last 5 attempts

4. Folding and reflection Member only

Practice shape properties, folding, reflection and symmetric construction

• Easy Practice foundations and questions at their reviewed difficulty e.g. The point is at the colored cell center. Tap its reflection across the vertical axis. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Choose the reflection of the line connecting the points of the source across the horizontal axis. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child translates to the other side without mirroring instead of reflecting. Is this always valid? —Accuracy · last 5 attempts

5. Completing and constructing symmetric figures Member only

Practice shape properties, folding, reflection and symmetric construction

• Easy Practice foundations and questions at their reviewed difficulty e.g. Tap to complete the pattern by reflecting the given part across the horizontal axis. Given cells are locked. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Tap to complete the pattern by reflecting the given part across the vertical axis. Given cells are locked. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Construct a figure using at least 4 cells, with at least 2 symmetry axes. Axes must give exact coincidence. —Accuracy · last 5 attempts

6. Symmetry in patterns, letters and contexts Member only

Practice shape properties, folding, reflection and symmetric construction

• Easy Practice foundations and questions at their reviewed difficulty e.g. For this geometric model, which lines give exact coincidence after folding? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Does the supplied pattern have at least one symmetry axis? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Are two eyes sufficient evidence that a real face is exactly symmetric? —Accuracy · last 5 attempts

7. Reasoning about symmetry Member only

Practice shape properties, folding, reflection and symmetric construction

• Easy Practice foundations and questions at their reviewed difficulty e.g. What is a line called when folding makes the two parts coincide exactly? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Select all figures with 4 sides and at least 1 symmetry axis. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Are equal areas on either side sufficient to prove a symmetry axis? —Accuracy · last 5 attempts

1. Collecting and classifying data Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. To study fruit choices in this group, what should be recorded. Which method fits? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. How often does Banana appear in all responses? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Each pupil chooses one fruit, but one pupil is recorded in two categories. What is wrong? —Accuracy · last 5 attempts

2. Reading one-way tables Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. What does this table describe? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Which fruit has the most choices? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child reads orange as 40 from the mango row. What is wrong? —Accuracy · last 5 attempts

3. Constructing one-way tables Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Complete each category frequency in the listed order. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Enter the banana frequency from the tally. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Raw data contains “grape” but the table has no grape category. What should be done? —Accuracy · last 5 attempts

4. Reading pictographs Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. According to the legend, how many pupils does one symbol represent? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. For 25 mango choices and 5 pupils per symbol, how many symbols are needed? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child reports symbol count as pupil count without using the legend. What is wrong? —Accuracy · last 5 attempts

5. Constructing pictographs Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Construct a whole-symbol pictograph with 2 pupils per symbol. Enter symbols per category. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Represent 40 pupils, 5 per symbol; 7 symbols already exist. How many more? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Need 80 pupils at 10 per symbol, but a child draws 80 symbols. What is wrong? —Accuracy · last 5 attempts

6. Connecting data representations Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Convert this table to a pictograph with 5 pupils per symbol. Enter symbols per category. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. What is the difference between largest and smallest category counts? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Table says banana 6; chart has 2 symbols of 2. What mismatches? —Accuracy · last 5 attempts

7. Solving and reasoning with data Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. How many pupils chose banana? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. To reach 70 apple choices, how many more than the table are needed? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. What is the difference between banana+mango and orange+apple totals? —Accuracy · last 5 attempts

1. Meaning of fractions Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. What fraction of the pictured whole is shaded? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 4 of 8 equal parts are shaded. What is the numerator? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child counts three unequal parts and calls the shaded part one third. What is wrong? —Accuracy · last 5 attempts

2. Reading and writing fractions Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. How is 2/3 read? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. How is 1/3 read? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. The picture shades 6 of 7 parts but is written 7/6. What is wrong? —Accuracy · last 5 attempts

3. Comparing equal denominators Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. The wholes have equal size. Choose the sign: 2/4 __ 4/4. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Choose the sign: 8/8 __ 1. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child says 3/6>4/6 because the smaller numerator comes first. What is wrong? —Accuracy · last 5 attempts

4. Comparing equal numerators Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Equal-sized wholes: choose the sign 3/7 __ 3/9. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Equal-sized wholes: choose the sign 2/2 __ 2/5. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. The sizes of two cakes are unknown. Ann eats 5/6, Bea 5/10. A child says Ann certainly eats more cake. Is that conclusion supported? —Accuracy · last 5 attempts

5. Ordering fractions Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Order 1/8, 4/8, 2/8 in ascending order. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Select the largest fraction. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Is 1/2 < 1/4 < 1/8 correct by denominator size? —Accuracy · last 5 attempts

6. Adding equal denominators Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 2/4 + 0/4 = ? Equivalent fractions are accepted. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 5/10 + 0/10 = ? Equivalent fractions are accepted. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Why does the denominator stay unchanged when adding equal-denominator fractions? —Accuracy · last 5 attempts

7. Subtracting equal denominators Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 3/4 − 1/4 = ? Equivalent fractions are accepted. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 7/9 − 7/9 = ? Equivalent fractions are accepted. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Why does the denominator stay unchanged when subtracting equal-denominator fractions? —Accuracy · last 5 attempts

8. Fraction situations Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Used 1/4 unit, then another 1/4. How much altogether? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Used 7/9, remaining 1/9. How much initially? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Have 2/3, use 1/3, then add 1/3. How much now? —Accuracy · last 5 attempts

1. Multiplying hundreds and thousands Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 700 × 7 = ? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 4 × 200 = 4 × 2 × __. Enter the place value. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. For 7×500, single-digit facts are correct but the product is ten times too large. What should be checked? —Accuracy · last 5 attempts

2. Three-digit by one-digit multiplication Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 123 × 2 = ? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 530 × 2 = ? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. 532 × 6 = ? —Accuracy · last 5 attempts

3. Four-digit by one-digit multiplication Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 3023 × 3 = ? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 5103 × 2 = ? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. 2484 × 6 = ? —Accuracy · last 5 attempts

4. Multiplying by multiples of ten Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 39 × 70 = ? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 47 × 70 = ? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Why must 87×50 be 87×5×10? —Accuracy · last 5 attempts

5. Two-digit by two-digit multiplication Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 56 × 11 = ? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 19 × 50 = ? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. 36 × 34 = ? —Accuracy · last 5 attempts

6. Multiplication strategies and checks Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 60×34 = 34×__. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Estimate 56×29 by rounding both factors to nearest ten. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Is 31×1+10 valid instead of multiplying by ten for 31×10? —Accuracy · last 5 attempts

7. Unknown multiplication values Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 35 × 24 = ? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 32×__=768. Find the missing value. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. For 46×__=184, which operation finds the missing factor? —Accuracy · last 5 attempts

8. Multiplication situations Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. There are 27 groups, each with 36 objects. How many objects altogether? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. There are 22 groups, each with 20 objects. How many objects altogether? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. There are 29 groups of 27 objects. Choose the total equation. —Accuracy · last 5 attempts

1. Division meanings and related facts Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. There are 20 objects. share equally among 4 pupils How many per pupil? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. In 45÷9=5, which number is the dividend? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Share 32 objects equally among 8 pupils. Which quantity is unknown? —Accuracy · last 5 attempts

2. Exact division Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 60 ÷ 3 = ? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 119 ÷ 7 = ? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child drops a zero without keeping its place, making the result ten times smaller. What failed? —Accuracy · last 5 attempts

3. Division with remainders Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 11 ÷ 2: enter quotient and remainder. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. 157 ÷ 2: enter quotient and remainder. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. 250÷4=61 remainder 6. The total matches, but is this a canonical quotient/remainder? —Accuracy · last 5 attempts

4. Long division Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. In long division 380÷5, which place is considered first? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. At step 1, divide partial dividend 3 by 9. What quotient digit belongs here? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. The quotient is 104, but a child drops its middle zero. What failed? —Accuracy · last 5 attempts

5. Checking and estimating division Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Which equation checks 234÷3=78 remainder 0? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Divisor 5, quotient 47, remainder 2: what is the dividend? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Positive 140 divided by 3>1 gives 280, larger than its dividend. Is it reasonable? —Accuracy · last 5 attempts

6. Unknown division values Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 119÷7=__ remainder 0. Find the missing value. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. From 3×23=69, select both related divisions. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. For __÷4=68, which equation finds the dividend? —Accuracy · last 5 attempts

7. Division situations Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. There are 546 objects. share equally among 7 pupils How many per pupil? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. There are 736 objects. groups of 8 Select the equation. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. There are 736 objects. groups of 8 Select the equation. —Accuracy · last 5 attempts

8. Interpreting and combining division Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 219 objects in groups of 9 make 24 full groups. How many are left? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Share among 7, each gets 20, with 4 left. How many initially? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. There are 176 pupils; each vehicle holds at most 9. How many vehicles minimum to carry everyone? —Accuracy · last 5 attempts

1. Length units Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. the thickness of a coin is about 4 __. Choose the reasonable unit. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Choose suitable units in order: Coin thickness / door height / distance between provinces —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child uses a very small unit for the height of a door. Which unit is more suitable? —Accuracy · last 5 attempts

2. Measuring and reading length Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. The object starts at 0 cm and ends at 18 cm. What is its length in cm? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Read the length and write cm and mm. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. The object starts at 6 cm and ends at 10 cm. A child answers 10 cm. Which method finds its length? —Accuracy · last 5 attempts

3. Length unit conversions Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Convert 30 mm to cm. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Convert 13 m to cm. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child uses 1 m = 10 cm and incorrectly converts 11 m. What is the correct number of cm in 1 m? —Accuracy · last 5 attempts

4. Estimating length Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. A pencil is about which estimate is reasonable: 18 cm, 80 km, 40 m? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. A child is about which estimate is reasonable: 118 cm, 260 m, 520 km? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Is this reasonable: A pencil is 180 m long? —Accuracy · last 5 attempts

5. Comparing and ordering lengths Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Choose the sign: 80 cm __ 82 cm —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Choose the sign: 5 m 38 cm __ 530 cm —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child compares 7 m 6 cm with 700 cm using only the numbers and ignoring units. How should the method be corrected? —Accuracy · last 5 attempts

6. Adding and subtracting lengths Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Calculate 43 cm + 12 cm. Answer in cm. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Calculate 5 m 80 cm + 2 m 20 cm. Answer in cm. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Calculate 7 m 20 cm − 2 m 75 cm. Answer in cm. —Accuracy · last 5 attempts

7. Unknown lengths and relationships Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 49 cm + __ = 73 cm. Enter the unknown in cm. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Start with 430 cm, then use 320 cm. How many cm remain? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. In __ + 48 cm = 69 cm, a child adds 48 cm+69 cm. Which method finds the unknown? —Accuracy · last 5 attempts

8. Length situations Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. The first rope length is 800 cm; another 150 cm is added. Find the total in cm. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. After using 250 cm, 700 cm remains. How many cm of rope length were there originally? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Route A is 6000 m; route B is 2500 m. Which choice gives the shorter route and correct difference? —Accuracy · last 5 attempts

1. Weight units and unit selection Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. the weight of a pencil is about 17 __. Choose the reasonable unit. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. A small bag of sugar weighs about which estimate is reasonable: 415 g, 2000 kg, 1500 hg? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child uses a very small unit for a student’s body weight. Which unit is more suitable? —Accuracy · last 5 attempts

2. Weighing and reading scales Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Read the measurement in g. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Read the scale and write kg and hg. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. The scale from 0 g to 1000 g has 5 intervals. A child reads each interval as 2000 g. What is the correct value per interval in g? —Accuracy · last 5 attempts

3. Weight unit conversions Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Convert 5 kg to g. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Convert 17 kg to hg. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child uses 1 kg = 100 g and incorrectly converts 7 kg. What is the correct number of g in 1 kg? —Accuracy · last 5 attempts

4. Estimating weight Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. An egg weighs about which estimate is reasonable: 60 g, 120 kg, 1800 g? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. A school textbook weighs about which estimate is reasonable: 573 g, 40 kg, 1000 kg? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Is this reasonable: An egg weighs 50 kg? —Accuracy · last 5 attempts

5. Comparing and ordering weights Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Choose the sign: 65 g __ 60 g —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Choose the sign: 4 kg 331 g __ 4545 g —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child compares 3 kg 55 g with 3276 g using only the numbers and ignoring units. How should the method be corrected? —Accuracy · last 5 attempts

6. Adding and subtracting weights Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Calculate 44 g + 9 g. Answer in g. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Calculate 7 kg 800 g + 4 kg 200 g. Answer in g. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Calculate 6 kg 200 g − 4 kg 750 g. Answer in g. —Accuracy · last 5 attempts

7. Unknown weights and relationships Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 30 g + __ = 49 g. Enter the unknown in g. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. The first part is 3200 g and the second is 1100 g. Find the total in g. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. In __ + 44 g = 67 g, a child adds 44 g+67 g. Which method finds the unknown? —Accuracy · last 5 attempts

8. Weight situations Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. The first rice weight is 5000 g; another 1500 g is added. Find the total in g. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. After using 2500 g, 6000 g remains. How many g of rice weight were there originally? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Start with 9000 g; use 2500 g, then 250 g. How many g remain? —Accuracy · last 5 attempts

1. Liters and milliliters Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. water in a ten-liter bucket is about 10 __. Choose the reasonable unit. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Choose suitable units in order: Medicine spoon, small milk carton, bucket —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child uses a very small unit for water in a ten-liter bucket. Which unit is more suitable? —Accuracy · last 5 attempts

2. Measuring and reading liquid scales Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Read the measurement in mL. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Read the measurement in mL. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. The scale from 0 mL to 500 mL has 5 intervals. A child reads each interval as 1000 mL. What is the correct value per interval in mL? —Accuracy · last 5 attempts

3. Liquid unit conversions Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Convert 3 L to mL. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Convert 14000 mL to L. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child uses 1 L = 100 mL and incorrectly converts 1 L. What is the correct number of mL in 1 L? —Accuracy · last 5 attempts

4. Estimating volume and capacity Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. A glass of water contains about which estimate is reasonable: 279 mL, 500 L, 100 L? —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. A small carton of milk contains about which estimate is reasonable: 235 mL, 800 L, 8000 L? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Is this reasonable: A medicine spoon holds 5 L? —Accuracy · last 5 attempts

5. Comparing and ordering volumes Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Choose the sign: 47 mL __ 39 mL —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Choose the sign: 8 L 140 mL __ 7914 mL —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. A child compares 7 L 10 mL with 7041 mL using only the numbers and ignoring units. How should the method be corrected? —Accuracy · last 5 attempts

6. Adding and subtracting volumes Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. Calculate 39 mL + 10 mL. Answer in mL. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. Calculate 4 L 800 mL + 1 L 200 mL. Answer in mL. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. Calculate 8 L 200 mL − 4 L 750 mL. Answer in mL. —Accuracy · last 5 attempts

7. Unknown volumes and capacity relationships Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. 23 mL + __ = 37 mL. Enter the unknown in mL. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. The first part is 5200 mL and the second is 2100 mL. Find the total in mL. —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. In __ + 24 mL = 43 mL, a child adds 24 mL+43 mL. Which method finds the unknown? —Accuracy · last 5 attempts

8. Volume and capacity situations Member only

Practice concepts, models and calculations with skills classified by the assessed content

• Easy Practice foundations and questions at their reviewed difficulty e.g. The first water volume is 7000 mL; another 1500 mL is added. Find the total in mL. —Accuracy · last 5 attempts
• Normal Practice foundations and questions at their reviewed difficulty e.g. After using 2500 mL, 5000 mL remains. How many mL of water volume were there originally? —Accuracy · last 5 attempts
• Hard Practice foundations and questions at their reviewed difficulty e.g. There is 2000 mL. Divide into groups of 500 mL. How many groups? —Accuracy · last 5 attempts

1. Money and its value Member only

Money and its value: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Money and its value — practice concepts and quantitative relationships e.g. What is the value in baht of this coin: 1 baht? —Accuracy · last 5 attempts
• Normal Money and its value — practice concepts and quantitative relationships e.g. Write “seventy baht fifty satang” in baht and satang. —Accuracy · last 5 attempts
• Hard Money and its value — practice concepts and quantitative relationships e.g. Is 5 baht × 2 pieces worth 11 baht? —Accuracy · last 5 attempts

2. Exchanging and making equivalent money Member only

Exchanging and making equivalent money: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Exchanging and making equivalent money — practice concepts and quantitative relationships e.g. How many 5-baht pieces equal 140 baht? —Accuracy · last 5 attempts
• Normal Exchanging and making equivalent money — practice concepts and quantitative relationships e.g. 50 ten-baht coins equal a banknote value of how many baht? —Accuracy · last 5 attempts
• Hard Exchanging and making equivalent money — practice concepts and quantitative relationships e.g. Pay 300 baht using unlimited 100-baht notes. What is the minimum number? —Accuracy · last 5 attempts

3. Comparing and ordering money Member only

Comparing and ordering money: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Comparing and ordering money — practice concepts and quantitative relationships e.g. Fill <, = or >: 13 baht 25 satang __ 11 baht 25 satang —Accuracy · last 5 attempts
• Normal Comparing and ordering money — practice concepts and quantitative relationships e.g. Fill <, = or >: 16 baht 75 satang __ 1675 satang —Accuracy · last 5 attempts
• Hard Comparing and ordering money — practice concepts and quantitative relationships e.g. Before comparing 69 baht 50 satang with 7150 satang, what should you do? —Accuracy · last 5 attempts

4. Adding and subtracting money Member only

Adding and subtracting money: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Adding and subtracting money — practice concepts and quantitative relationships e.g. 50 baht 0 satang + 40 baht 0 satang = ? —Accuracy · last 5 attempts
• Normal Adding and subtracting money — practice concepts and quantitative relationships e.g. 0 baht 85 satang − 0 baht 26 satang = ? —Accuracy · last 5 attempts
• Hard Adding and subtracting money — practice concepts and quantitative relationships e.g. Normalize 26 baht 150 satang to standard baht and satang. —Accuracy · last 5 attempts

5. Purchases and change Member only

Purchases and change: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Purchases and change — practice concepts and quantitative relationships e.g. The price label says 25 baht 0 satang. What is the price? —Accuracy · last 5 attempts
• Normal Purchases and change — practice concepts and quantitative relationships e.g. An item costs 10 baht 0 satang. You pay 16 baht 0 satang. How much change? —Accuracy · last 5 attempts
• Hard Purchases and change — practice concepts and quantitative relationships e.g. Price 40 baht 0 satang, payment 59 baht 0 satang: how should change be calculated? —Accuracy · last 5 attempts

6. Money word problems Member only

Money word problems: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Money word problems — practice concepts and quantitative relationships e.g. Buy a pencil for 18 baht 0 satang and a notebook for 16 baht 0 satang. What is the total? —Accuracy · last 5 attempts
• Normal Money word problems — practice concepts and quantitative relationships e.g. 7 equal-price snacks cost 56 baht 0 satang. What is the unit price? —Accuracy · last 5 attempts
• Hard Money word problems — practice concepts and quantitative relationships e.g. A costs 62 baht 0 satang, B costs 61 baht 0 satang. Which operation finds how much more expensive A is? —Accuracy · last 5 attempts

7. Reading and recording income and expenses Member only

Reading and recording income and expenses: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Reading and recording income and expenses — practice concepts and quantitative relationships e.g. For date 11, “Allowance”, 50 baht belongs in which column? —Accuracy · last 5 attempts
• Normal Reading and recording income and expenses — practice concepts and quantitative relationships e.g. In the record, how many baht is “Buy notebook” on date 12? —Accuracy · last 5 attempts
• Hard Reading and recording income and expenses — practice concepts and quantitative relationships e.g. For date 4, “Allowance”, 20 baht belongs in which column? —Accuracy · last 5 attempts

8. Analyzing income, expenses and balances Member only

Analyzing income, expenses and balances: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Analyzing income, expenses and balances — practice concepts and quantitative relationships e.g. From the table, what is the total income in baht? —Accuracy · last 5 attempts
• Normal Analyzing income, expenses and balances — practice concepts and quantitative relationships e.g. After the entry on date 14, what is the balance in baht? —Accuracy · last 5 attempts
• Hard Analyzing income, expenses and balances — practice concepts and quantitative relationships e.g. After the entry on date 23, what is the balance in baht? —Accuracy · last 5 attempts

1. Arithmetic relationships Member only

Arithmetic relationships: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Arithmetic relationships — practice concepts and quantitative relationships e.g. Have 26 balls and receive 8. Which operation finds the new total? —Accuracy · last 5 attempts
• Normal Arithmetic relationships — practice concepts and quantitative relationships e.g. If 60+9=69, what is 69−9? —Accuracy · last 5 attempts
• Hard Arithmetic relationships — practice concepts and quantitative relationships e.g. Fill the operation: 56 __ 8 = 7 —Accuracy · last 5 attempts

2. Mixed addition and subtraction Member only

Mixed addition and subtraction: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Mixed addition and subtraction — practice concepts and quantitative relationships e.g. Calculate from left to right: 31 + 7 + 8 —Accuracy · last 5 attempts
• Normal Mixed addition and subtraction — practice concepts and quantitative relationships e.g. For 106 + 11 − 9, which step comes first? —Accuracy · last 5 attempts
• Hard Mixed addition and subtraction — practice concepts and quantitative relationships e.g. Find the unknown: __ + 5 − 9 = 75 —Accuracy · last 5 attempts

3. Mixed multiplication and division Member only

Mixed multiplication and division: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Mixed multiplication and division — practice concepts and quantitative relationships e.g. Calculate from left to right: 5 × 9 × 10 —Accuracy · last 5 attempts
• Normal Mixed multiplication and division — practice concepts and quantitative relationships e.g. There are 60 boxes of 2 items, shared equally among 10 people. How many each? Choose the expression showing the operation sequence. —Accuracy · last 5 attempts
• Hard Mixed multiplication and division — practice concepts and quantitative relationships e.g. Share 110 indivisible items equally among 6 people. Will there be a remainder? —Accuracy · last 5 attempts

4. Mixed arithmetic operations Member only

Mixed arithmetic operations: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Mixed arithmetic operations — practice concepts and quantitative relationships e.g. There are 7 boxes of 5 items and 6 loose items. What is the total? —Accuracy · last 5 attempts
• Normal Mixed arithmetic operations — practice concepts and quantitative relationships e.g. There are 5 boxes of 8 items and 15 loose items. What is the total? —Accuracy · last 5 attempts
• Hard Mixed arithmetic operations — practice concepts and quantitative relationships e.g. There are 36 items, receive 9 more, then share equally among 9 people. How many each? Select the expression matching the situation. —Accuracy · last 5 attempts

5. Unknown values Member only

Unknown values: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Unknown values — practice concepts and quantitative relationships e.g. Find the unknown: 45 + __ = 47 —Accuracy · last 5 attempts
• Normal Unknown values — practice concepts and quantitative relationships e.g. Find the unknown: 5 × __ = 45 —Accuracy · last 5 attempts
• Hard Unknown values — practice concepts and quantitative relationships e.g. Which inverse operation solves __ × 5 = 25? —Accuracy · last 5 attempts

6. Modeling arithmetic situations Member only

Modeling arithmetic situations: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Modeling arithmetic situations — practice concepts and quantitative relationships e.g. Start with 66, receive 7 Select the expression matching the situation. —Accuracy · last 5 attempts
• Normal Modeling arithmetic situations — practice concepts and quantitative relationships e.g. Group 32 items into groups of 8 Select the expression matching the situation. —Accuracy · last 5 attempts
• Hard Modeling arithmetic situations — practice concepts and quantitative relationships e.g. Match all stories: A: 8 boxes of 5 items and 57 loose items; B: Start with 57 items, receive 8, share among 5 people; C: Start with 57 items, give 5 each to 8 groups —Accuracy · last 5 attempts

7. Multi-step word problems Member only

Multi-step word problems: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Multi-step word problems — practice concepts and quantitative relationships e.g. Start with 24 items, receive 11, then use 8. How many remain? —Accuracy · last 5 attempts
• Normal Multi-step word problems — practice concepts and quantitative relationships e.g. There are 50 items, use 10, then share the rest among 5 people. How many each? —Accuracy · last 5 attempts
• Hard Multi-step word problems — practice concepts and quantitative relationships e.g. 6 bags of 10 snacks, shared among 8 people. How many each and how many left? —Accuracy · last 5 attempts

8. Reasoning and checking solutions Member only

Reasoning and checking solutions: distinguish understanding the situation from calculation and check whether answers make sense.

• Easy Reasoning and checking solutions — practice concepts and quantitative relationships e.g. Which expression checks 348÷6=58? —Accuracy · last 5 attempts
• Normal Reasoning and checking solutions — practice concepts and quantitative relationships e.g. Have 19, use 2; is 21 remaining reasonable? —Accuracy · last 5 attempts
• Hard Reasoning and checking solutions — practice concepts and quantitative relationships e.g. (5 × 6) − 11: step 1 correctly gives 30; step 2 gives 20. Which step is wrong? —Accuracy · last 5 attempts