Practice · Primary School
Grade 6 Choose a level that feels right. There's always room to try something new.
Choose a chapter; tab colors indicate the term. Available quizzes cover the listed skills. Addition, subtraction, multiplication and division are in Basic.
Term 1 Term 2
Term 1
Chapter 1 ห.ร.ม. และ ค.ร.น.
1. Factors and divisibility
Factors and divisibility
Accuracy · last 5 attempts
2. Primes and prime factors Member only
Primes and prime factors
Accuracy · last 5 attempts
Easy
Practice Primes and prime factors e.g. Which statement about primes is correct?
— Accuracy · last 5 attempts
Normal
Practice Primes and prime factors e.g. Primes from 20 through 40 — what is the greatest?
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Hard
Practice Primes and prime factors e.g. List the distinct prime factors of 72, in increasing order
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3. Prime factorization Member only
Prime factorization
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Easy
Practice Prime factorization e.g. How should 48 be factored into primes?
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Normal
Practice Prime factorization e.g. Repeatedly divide 144 by its smallest prime factor. Enter each successive quotient through 1.
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Hard
Practice Prime factorization e.g. 48 × □ = 240. What is the missing prime factor?
— Accuracy · last 5 attempts
4. Greatest common divisor Member only
Greatest common divisor
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Easy
Practice Greatest common divisor e.g. Which correctly describes the GCD of 84, 126?
— Accuracy · last 5 attempts
Normal
Practice Greatest common divisor e.g. Find the GCD of 7 and 10
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Hard
Practice Greatest common divisor e.g. A child claims GCD(36,54) = 9. Correct?
— Accuracy · last 5 attempts
5. Least common multiple Member only
Least common multiple
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Easy
Practice Least common multiple e.g. Which correctly describes the LCM of 60, 90?
— Accuracy · last 5 attempts
Normal
Practice Least common multiple e.g. Find the LCM of 7 and 10
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Hard
Practice Least common multiple e.g. From 234, 312, 390, list numbers whose LCM with 156 equals 312, in increasing order.
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6. GCD and LCM relationships Member only
GCD and LCM relationships
Accuracy · last 5 attempts
Easy
Practice GCD and LCM relationships e.g. For two positive integers 60, 90, which relationship is correct?
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Normal
Practice GCD and LCM relationships e.g. Fill the sign: GCD __ LCM of 156, 234
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Hard
Practice GCD and LCM relationships e.g. Do 132, 198 have GCD 66 and LCM 396?
— Accuracy · last 5 attempts
7. GCD situations Member only
GCD situations
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Easy
Practice GCD situations e.g. Pack 72 pencils and 108 erasers into the maximum number of identical packs without leftovers. Which method?
— Accuracy · last 5 attempts
Normal
Practice GCD situations e.g. Tile a 480 × 720 cm floor with the largest equal squares, without cutting. Find tile count.
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Hard
Practice GCD situations e.g. Can 48 pencils and 72 erasers form at most 12 identical packs without leftovers?
— Accuracy · last 5 attempts
8. LCM situations and applications Member only
LCM situations and applications
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Easy
Practice LCM situations and applications e.g. Events recur every 12, 18 minutes and start together. Which principle finds their next coincidence?
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Normal
Practice LCM situations and applications e.g. Activities every 6 and 8 days coincide on October 1. On what October date do they next coincide?
— Accuracy · last 5 attempts
Hard
Practice LCM situations and applications e.g. Buses recur every 24, 36 minutes, fare 25 baht. For their next coincidence, which datum is irrelevant?
— Accuracy · last 5 attempts
Term 1
Chapter 2 เศษส่วน
1. Comparing fractions using LCM Member only
Comparing fractions using LCM
Accuracy · last 5 attempts
Easy
Practice Comparing fractions using LCM e.g. Find the numerator: 3/4 = □/20
— Accuracy · last 5 attempts
Normal
Practice Comparing fractions using LCM e.g. Fill <, = or >: 7/4 __ 11/6
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Hard
Practice Comparing fractions using LCM e.g. Which of 1/2, 5/8, 3/4 lies strictly between 3/5 and 2/3?
— Accuracy · last 5 attempts
2. Comparing and ordering mixed numbers Member only
Comparing and ordering mixed numbers
Accuracy · last 5 attempts
Easy
Practice Comparing and ordering mixed numbers e.g. Fill <, = or >: 31/3 __ 56/5
— Accuracy · last 5 attempts
Normal
Practice Comparing and ordering mixed numbers e.g. Order 3/4, 5/6, 2/3 from least to greatest.
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Hard
Practice Comparing and ordering mixed numbers e.g. Among 11/3, 15/4, 23/6, what is the greatest value?
— Accuracy · last 5 attempts
3. Fraction addition and subtraction using LCM Member only
Fraction addition and subtraction using LCM
Accuracy · last 5 attempts
Easy
Practice Fraction addition and subtraction using LCM e.g. For 3/8 + 5/12, both 24 and 96 are common denominators. Which is the least?
— Accuracy · last 5 attempts
Normal
Practice Fraction addition and subtraction using LCM e.g. 28/48 − 20/72 = ?
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Hard
Practice Fraction addition and subtraction using LCM e.g. Check 3/4 − 1/6 = 7/12 by addition. What is 7/12 + 1/6?
— Accuracy · last 5 attempts
4. Mixed-number addition and subtraction Member only
Mixed-number addition and subtraction
Accuracy · last 5 attempts
Easy
Practice Mixed-number addition and subtraction e.g. 2 5/20 + 1 10/20 = ?
— Accuracy · last 5 attempts
Normal
Practice Mixed-number addition and subtraction e.g. 5 6/8 − 2 2/12 = ?
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Hard
Practice Mixed-number addition and subtraction e.g. 3 2/4 + 2 4/6 − 1 2/8 = ?
— Accuracy · last 5 attempts
5. Fraction expressions with parentheses Member only
Fraction expressions with parentheses
Accuracy · last 5 attempts
Easy
Practice Fraction expressions with parentheses e.g. In (1/2 + 1/3) × 3/5, which operation comes first?
— Accuracy · last 5 attempts
Normal
Practice Fraction expressions with parentheses e.g. (6/8 ÷ 2/4) − 4/6 = ?
— Accuracy · last 5 attempts
Hard
Practice Fraction expressions with parentheses e.g. Choose + or −: (1/2 □ 1/4) × 4 = 3
— Accuracy · last 5 attempts
6. Fraction expressions without parentheses Member only
Fraction expressions without parentheses
Accuracy · last 5 attempts
Easy
Practice Fraction expressions without parentheses e.g. In 1/2 + 2/3 × 3/4, which operation comes first?
— Accuracy · last 5 attempts
Normal
Practice Fraction expressions without parentheses e.g. 5/6 − 1/3 + 1/4 = ?
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Hard
Practice Fraction expressions without parentheses e.g. Are 1/2 + 1/3 × 3 and (1/2 + 1/3) × 3 equal?
— Accuracy · last 5 attempts
7. One- and two-step fraction situations Member only
One- and two-step fraction situations
Accuracy · last 5 attempts
Easy
Practice One- and two-step fraction situations e.g. There is 3/4 kg flour, and 2/3 kg is bought. What is given?
— Accuracy · last 5 attempts
Normal
Practice One- and two-step fraction situations e.g. Water 1/2 L; add 1/3 and 1/4 L. Total L?
— Accuracy · last 5 attempts
Hard
Practice One- and two-step fraction situations e.g. Of 240 sweets, eat 1/3, then 1/4 of the remainder. How many are eaten second?
— Accuracy · last 5 attempts
8. Three-step fraction situations Member only
Three-step fraction situations
Accuracy · last 5 attempts
Easy
Practice Three-step fraction situations e.g. Water 20 L: add 6, use 9, add 3 L. Remaining L?
— Accuracy · last 5 attempts
Normal
Practice Three-step fraction situations e.g. Money 9600 baht: spend 1/4, then 1/3 of the remainder; receive 1200. Balance?
— Accuracy · last 5 attempts
Hard
Practice Three-step fraction situations e.g. Use 1/3 of the water, then 2 L, with initial amount unknown. Can the remainder be determined?
— Accuracy · last 5 attempts
Term 1
Chapter 3 ทศนิยม
1. Fractions and decimals Member only
Fractions and decimals
Accuracy · last 5 attempts
Easy
Practice Fractions and decimals e.g. Write 7 as a decimal.
— Accuracy · last 5 attempts
Normal
Practice Fractions and decimals e.g. Write 11/4 as a decimal.
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Hard
Practice Fractions and decimals e.g. Fill the sign: 3/4 __ 0.8
— Accuracy · last 5 attempts
2. Decimal divided by whole number Member only
Decimal divided by whole number
Accuracy · last 5 attempts
Easy
Practice Decimal divided by whole number e.g. 25.2 ÷ 2 = ?
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Normal
Practice Decimal divided by whole number e.g. 337.75 ÷ 100 = ?
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Hard
Practice Decimal divided by whole number e.g. Check 50.4 ÷ 3 = 16.8: what is 16.8 × 3?
— Accuracy · last 5 attempts
3. Whole number divided by decimal Member only
Whole number divided by decimal
Accuracy · last 5 attempts
Easy
Practice Whole number divided by decimal e.g. 16 ÷ 0.4 = ?
— Accuracy · last 5 attempts
Normal
Practice Whole number divided by decimal e.g. 30 ÷ 2.5 = ?
— Accuracy · last 5 attempts
Hard
Practice Whole number divided by decimal e.g. Fill the sign: 50.4 ÷ 0.2 __ 50.4 ÷ 0.4
— Accuracy · last 5 attempts
4. Decimal divided by decimal Member only
Decimal divided by decimal
Accuracy · last 5 attempts
Easy
Practice Decimal divided by decimal e.g. 4.8 ÷ 0.6 = ?
— Accuracy · last 5 attempts
Normal
Practice Decimal divided by decimal e.g. 3.75 ÷ 0.25 = ?
— Accuracy · last 5 attempts
Hard
Practice Decimal divided by decimal e.g. Fill the sign: 25.2 ÷ 2 __ 25.2 ÷ 4
— Accuracy · last 5 attempts
5. Mixed decimal operations Member only
Mixed decimal operations
Accuracy · last 5 attempts
Easy
Practice Mixed decimal operations e.g. Which comes first in 2.5 + 1.2 × 3?
— Accuracy · last 5 attempts
Normal
Practice Mixed decimal operations e.g. 8.7 − 3.2 + 1.7 = ?
— Accuracy · last 5 attempts
Hard
Practice Mixed decimal operations e.g. Are 2 + 3 × 1.5 and (2 + 3) × 1.5 equal?
— Accuracy · last 5 attempts
6. Unknown values and estimates Member only
Unknown values and estimates
Accuracy · last 5 attempts
Easy
Practice Unknown values and estimates e.g. Find □: □ ÷ 2.5 = 8
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Normal
Practice Unknown values and estimates e.g. Find □: 2 × □ + 1.5 = 7.5
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Hard
Practice Unknown values and estimates e.g. Which is nearest to 99.5 ÷ 19.8: 0.5, 5, 50?
— Accuracy · last 5 attempts
7. One- and two-step decimal situations Member only
One- and two-step decimal situations
Accuracy · last 5 attempts
Easy
Practice One- and two-step decimal situations e.g. Water 27.5 L plus 16 L. Total?
— Accuracy · last 5 attempts
Normal
Practice One- and two-step decimal situations e.g. Pens cost 12.5 baht each; buy 16. Total?
— Accuracy · last 5 attempts
Hard
Practice One- and two-step decimal situations e.g. Water 72 L, 0.75 L per bottle, 15 baht per bottle. Revenue?
— Accuracy · last 5 attempts
8. Multi-step decimal situations Member only
Multi-step decimal situations
Accuracy · last 5 attempts
Easy
Practice Multi-step decimal situations e.g. Buy 25 notebooks at 18.50 and 15 pens at 12.75 baht. Pay 1000. Change?
— Accuracy · last 5 attempts
Normal
Practice Multi-step decimal situations e.g. Rope 30 m: use four 2.75 m pieces, then cut the rest into 0.5 m pieces. Count?
— Accuracy · last 5 attempts
Hard
Practice Multi-step decimal situations e.g. Buy 2.5 kg apples with unit price unknown. Can total price be determined?
— Accuracy · last 5 attempts
Term 1
Chapter 4 ร้อยละและอัตราส่วน
1. Percentages using fractions Member only
Percentages using fractions
Accuracy · last 5 attempts
Easy
Practice Percentages using fractions e.g. 75% means how many parts out of 100?
— Accuracy · last 5 attempts
Normal
Practice Percentages using fractions e.g. For 20% of 1000, enter the fraction representing 20% and its product with 1000.
— Accuracy · last 5 attempts
Hard
Practice Percentages using fractions e.g. Why can 50% of 2800 be found by dividing 2800 by 2?
— Accuracy · last 5 attempts
2. Percentages using the unitary method Member only
Percentages using the unitary method
Accuracy · last 5 attempts
Easy
Practice Percentages using the unitary method e.g. What percentage of the total 640 is 256?
— Accuracy · last 5 attempts
Normal
Practice Percentages using the unitary method e.g. Water 250 mL out of 2 L: what percentage?
— Accuracy · last 5 attempts
Hard
Practice Percentages using the unitary method e.g. Of 4800 pupils, 35% like football. How many?
— Accuracy · last 5 attempts
3. Percentage situations Member only
Percentage situations
Accuracy · last 5 attempts
Easy
Practice Percentage situations e.g. Of 3400 pupils, 15% are absent. Count absent pupils.
— Accuracy · last 5 attempts
Normal
Practice Percentage situations e.g. From 2040 originally to 2550, what is the percentage change relative to the original? Give its magnitude.
— Accuracy · last 5 attempts
Hard
Practice Percentage situations e.g. From 160 originally to 200, what is the percentage change relative to the original? Give its magnitude.
— Accuracy · last 5 attempts
4. Cost, profit, loss and discounts Member only
Cost, profit, loss and discounts
Accuracy · last 5 attempts
Easy
Practice Cost, profit, loss and discounts e.g. Buy for 600 baht, sell for 750. What is the cost?
— Accuracy · last 5 attempts
Normal
Practice Cost, profit, loss and discounts e.g. Cost 8000 baht, loss of 15% of cost. Selling price?
— Accuracy · last 5 attempts
Hard
Practice Cost, profit, loss and discounts e.g. After 20% off, price is 5120. Original price?
— Accuracy · last 5 attempts
5. Multi-step percentage situations Member only
Multi-step percentage situations
Accuracy · last 5 attempts
Easy
Practice Multi-step percentage situations e.g. Shirts 800 baht each, 15% off. Cost of 2?
— Accuracy · last 5 attempts
Normal
Practice Multi-step percentage situations e.g. Original 8000: decrease 10% of original, then decrease 20% of the new amount. Final?
— Accuracy · last 5 attempts
Hard
Practice Multi-step percentage situations e.g. After 20% off, then 10% off the remainder, price is 5760. Original?
— Accuracy · last 5 attempts
6. Ratios and equivalent ratios Member only
Ratios and equivalent ratios
Accuracy · last 5 attempts
Easy
Practice Ratios and equivalent ratios e.g. A has 38 items, B has 57. Write the ratio A : B; enter components in order.
— Accuracy · last 5 attempts
Normal
Practice Ratios and equivalent ratios e.g. A has 14 items, B has 21. Write the ratio A : B in lowest terms; enter components in order.
— Accuracy · last 5 attempts
Hard
Practice Ratios and equivalent ratios e.g. Red 28, blue 42, green 70: write red : blue : green in lowest terms.
— Accuracy · last 5 attempts
7. Ratio situations Member only
Ratio situations
Accuracy · last 5 attempts
Easy
Practice Ratio situations e.g. A : B = 2 : 3, with A = 168. Find B.
— Accuracy · last 5 attempts
Normal
Practice Ratio situations e.g. A : B = 2 : 5; B exceeds A by 390. Find A.
— Accuracy · last 5 attempts
Hard
Practice Ratio situations e.g. Initially syrup : water = 2 : 3. Add 190 L water, giving 1 : 2. Initial syrup?
— Accuracy · last 5 attempts
8. Maps, plans and scales Member only
Maps, plans and scales
Accuracy · last 5 attempts
Easy
Practice Maps, plans and scales e.g. Scale 1 : 100: 1 cm represents how many real cm?
— Accuracy · last 5 attempts
Normal
Practice Maps, plans and scales e.g. Map/plan 1 : 100, measured 3 cm. Real distance in m?
— Accuracy · last 5 attempts
Hard
Practice Maps, plans and scales e.g. Scale 1 : 200,000: 1 cm represents how many km?
— Accuracy · last 5 attempts
Term 1
Chapter 5 แบบรูป
1. Constant additive patterns Member only
Constant additive patterns
Accuracy · last 5 attempts
Easy
Practice Constant additive patterns e.g. Rule: Increase by 5 each time. 17, 22, 27, 32, □. Find the next term.
— Accuracy · last 5 attempts
Normal
Practice Constant additive patterns e.g. Rule: Increase by 7 each time. Complete blanks left to right: □, 32, 39, 46, 53
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Hard
Practice Constant additive patterns e.g. A: 13, 17, 21; B: 13, 18, 23, both constant differences. Which has the greater increase per step?
— Accuracy · last 5 attempts
2. Constant subtractive patterns Member only
Constant subtractive patterns
Accuracy · last 5 attempts
Easy
Practice Constant subtractive patterns e.g. Rule: Decrease by 3 each time. 48, 45, 42, 39, □. Find the next term.
— Accuracy · last 5 attempts
Normal
Practice Constant subtractive patterns e.g. Rule: Decrease by 7 each time. Complete blanks left to right: □, 88, 81, 74, 67
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Hard
Practice Constant subtractive patterns e.g. A: 136, 127, 118; B: 136, 126, 116, both constant differences. Which has the greater decrease per step?
— Accuracy · last 5 attempts
3. Patterns with changing differences Member only
Patterns with changing differences
Accuracy · last 5 attempts
Easy
Practice Patterns with changing differences e.g. Rule: Successive differences start at 3 and change by 1 each time. 23, 26, 30, 35, 41, □. Find the next term.
— Accuracy · last 5 attempts
Normal
Practice Patterns with changing differences e.g. Rule: Successive differences start at 4 and change by 2 each time. Complete blanks in order: 16, 20, 26, □, 44
— Accuracy · last 5 attempts
Hard
Practice Patterns with changing differences e.g. Rule: Squares of consecutive integers, starting at 4². 16, 25, 36, 49, 64, □. Find the next term.
— Accuracy · last 5 attempts
4. Multiplicative patterns Member only
Multiplicative patterns
Accuracy · last 5 attempts
Easy
Practice Multiplicative patterns e.g. Rule: Multiply by 2 each time. 2, 4, 8, 16, □. Find the next term.
— Accuracy · last 5 attempts
Normal
Practice Multiplicative patterns e.g. Rule: Multiply by 3 each time. Complete blanks left to right: □, 12, 36, 108, 324
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Hard
Practice Multiplicative patterns e.g. A rule Multiply by 2 each time, B rule Multiply by 3 each time, both start at 3. Which has a greater fifth term?
— Accuracy · last 5 attempts
5. Division patterns Member only
Division patterns
Accuracy · last 5 attempts
Easy
Practice Division patterns e.g. Rule: Divide by 2 each time. 3072, 1536, 768, 384, □. Find the next term.
— Accuracy · last 5 attempts
Normal
Practice Division patterns e.g. Rule: Divide by 2 each time. Complete blanks left to right: □, 512, 256, 128, 64
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Hard
Practice Division patterns e.g. Rule: Divide by 2 each time. 6, 3, 3/2, 3/4, 3/8, □. Find the next term; an equivalent fraction or decimal is accepted.
— Accuracy · last 5 attempts
6. Pattern rules and checking Member only
Pattern rules and checking
Accuracy · last 5 attempts
Easy
Practice Pattern rules and checking e.g. For 3, 10, 17, 24, select the rule family from constant addition, subtraction, multiplication or division.
— Accuracy · last 5 attempts
Normal
Practice Pattern rules and checking e.g. Rule: Multiply by 2 each time. 17, 34, 68, 137, 272. Enter the wrong value and its correction.
— Accuracy · last 5 attempts
Hard
Practice Pattern rules and checking e.g. How do A:3,6,9,12 and B:3,6,12,24 differ?
— Accuracy · last 5 attempts
7. Pattern situations Member only
Pattern situations
Accuracy · last 5 attempts
Easy
Practice Pattern situations e.g. Read 8 pages on day 1, then 2 more than the previous day each day. Pages on day 8?
— Accuracy · last 5 attempts
Normal
Practice Pattern situations e.g. dot figure: first figure/set has 3, increases by 2 per set. How many in set 12?
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Hard
Practice Pattern situations e.g. First row 20 items, increase 5 per row. Which row has 50?
— Accuracy · last 5 attempts
8. Applied patterns and totals Member only
Applied patterns and totals
Accuracy · last 5 attempts
Easy
Practice Applied patterns and totals e.g. Rule Increase by 4 each time, start 12. Find term 38.
— Accuracy · last 5 attempts
Normal
Practice Applied patterns and totals e.g. At round 0: 2304 L, halved each round. After 7 rounds, remainder?
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Hard
Practice Applied patterns and totals e.g. Start 3, add 2 each time. Position of 57?
— Accuracy · last 5 attempts
Term 2
Chapter 6 รูปสามเหลี่ยม
1. Triangle classification Member only
Triangle classification
Accuracy · last 5 attempts
Easy
Practice Triangle classification e.g. Sides 15, 15, 15 cm: classify by sides.
— Accuracy · last 5 attempts
Normal
Practice Triangle classification e.g. What is each angle of an equilateral triangle?
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Hard
Practice Triangle classification e.g. A: 5,5,6; B: 4,4,4; C: 3,4,5 cm. Which have at least two equal sides?
— Accuracy · last 5 attempts
2. Triangle components, base and height Member only
Triangle components, base and height
Accuracy · last 5 attempts
Easy
Practice Triangle components, base and height e.g. Name and count the vertices of ABC.
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Normal
Practice Triangle components, base and height e.g. BC is the base. Which sides meet at the apex?
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Hard
Practice Triangle components, base and height e.g. Can any side serve as the base with its corresponding height?
— Accuracy · last 5 attempts
3. Triangle interior angles Member only
Triangle interior angles
Accuracy · last 5 attempts
Easy
Practice Triangle interior angles e.g. What is the triangle angle sum?
— Accuracy · last 5 attempts
Normal
Practice Triangle interior angles e.g. Isosceles base angles each 40°. Find the apex.
— Accuracy · last 5 attempts
Hard
Practice Triangle interior angles e.g. Angles 50°, 60°, □. Find the missing angle.
— Accuracy · last 5 attempts
4. Triangle construction Member only
Triangle construction
Accuracy · last 5 attempts
Easy
Practice Triangle construction e.g. Which tools construct a triangle with sides 5,6,7 cm?
— Accuracy · last 5 attempts
Normal
Practice Triangle construction e.g. Construct two sides from one vertex, 30,20 cm, included angle 60°. Enter first side, second side and measured angle.
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Hard
Practice Triangle construction e.g. Can a triangle have angles 50°,60°,80°?
— Accuracy · last 5 attempts
5. Triangle perimeter Member only
Triangle perimeter
Accuracy · last 5 attempts
Easy
Practice Triangle perimeter e.g. Sides 15,18,21 units. Find the perimeter.
— Accuracy · last 5 attempts
Normal
Practice Triangle perimeter e.g. Perimeter 120; two sides 35,40. Find the third.
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Hard
Practice Triangle perimeter e.g. First side 12 cm; second 4 cm longer; third 20 cm. Find perimeter.
— Accuracy · last 5 attempts
6. Triangle area Member only
Triangle area
Accuracy · last 5 attempts
Easy
Practice Triangle area e.g. What does triangle area measure?
— Accuracy · last 5 attempts
Normal
Practice Triangle area e.g. Triangle base 13.5, perpendicular height 12 units. Find area.
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Hard
Practice Triangle area e.g. Base grows by factor 2; height unchanged. Area factor?
— Accuracy · last 5 attempts
7. Triangle perimeter and area situations Member only
Triangle perimeter and area situations
Accuracy · last 5 attempts
Easy
Practice Triangle perimeter and area situations e.g. Triangle garden sides 96,120,144 m. Fence length?
— Accuracy · last 5 attempts
Normal
Practice Triangle perimeter and area situations e.g. Triangle land area 960 m², height 10 m. Find base.
— Accuracy · last 5 attempts
Hard
Practice Triangle perimeter and area situations e.g. Rectangle 64×96 cm split by a diagonal. Area of each triangle?
— Accuracy · last 5 attempts
8. Applied triangle situations Member only
Applied triangle situations
Accuracy · last 5 attempts
Easy
Practice Applied triangle situations e.g. Nonoverlapping triangles, base/height (232,174),(290,116) cm. Total area?
— Accuracy · last 5 attempts
Normal
Practice Applied triangle situations e.g. Inside a 12×8 cm rectangle, shaded triangle base 6, height 4 cm. Shaded area?
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Hard
Practice Applied triangle situations e.g. Rectangle 480×320 contains shaded triangle base 288, height 192. Unshaded area?
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Term 2
Chapter 7 รูปหลายเหลี่ยม
1. Polygon types and components Member only
Polygon types and components
Accuracy · last 5 attempts
Easy
Practice Polygon types and components e.g. Is a closed figure with five straight sides a polygon?
— Accuracy · last 5 attempts
Normal
Practice Polygon types and components e.g. A 8-sided polygon has how many interior angles?
— Accuracy · last 5 attempts
Hard
Practice Polygon types and components e.g. Is a closed figure with a curved boundary part a polygon?
— Accuracy · last 5 attempts
2. Equal sides, equal angles and regular polygons Member only
Equal sides, equal angles and regular polygons
Accuracy · last 5 attempts
Easy
Practice Equal sides, equal angles and regular polygons e.g. What is the side property of an equilateral polygon?
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Normal
Practice Equal sides, equal angles and regular polygons e.g. Regular hexagon side 45 cm. Perimeter?
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Hard
Practice Equal sides, equal angles and regular polygons e.g. Is every rhombus regular?
— Accuracy · last 5 attempts
3. Polygon interior angles Member only
Polygon interior angles
Accuracy · last 5 attempts
Easy
Practice Polygon interior angles e.g. 3-gon: interior angle sum?
— Accuracy · last 5 attempts
Normal
Practice Polygon interior angles e.g. Convex 5-gon: how many triangles from one vertex?
— Accuracy · last 5 attempts
Hard
Practice Polygon interior angles e.g. 5-gon: interior angle sum?
— Accuracy · last 5 attempts
4. Polygon perimeter Member only
Polygon perimeter
Accuracy · last 5 attempts
Easy
Practice Polygon perimeter e.g. What does perimeter measure?
— Accuracy · last 5 attempts
Normal
Practice Polygon perimeter e.g. Equal-sided hexagon perimeter 432 cm. Each side?
— Accuracy · last 5 attempts
Hard
Practice Polygon perimeter e.g. A perimeter 384; B perimeter 280 cm. Difference?
— Accuracy · last 5 attempts
5. Area by decomposition Member only
Area by decomposition
Accuracy · last 5 attempts
Easy
Practice Area by decomposition e.g. Can a house-shaped pentagon split into a rectangle and a triangle?
— Accuracy · last 5 attempts
Normal
Practice Area by decomposition e.g. Hexagon split into rectangle area 160 and two triangles each 48. Total?
— Accuracy · last 5 attempts
Hard
Practice Area by decomposition e.g. Three areas 20,15,25. First and third are shaded. Shaded total?
— Accuracy · last 5 attempts
6. Area by completion and subtraction Member only
Area by completion and subtraction
Accuracy · last 5 attempts
Easy
Practice Area by completion and subtraction e.g. Can an L-shape be completed to a rectangle then the addition subtracted?
— Accuracy · last 5 attempts
Normal
Practice Area by completion and subtraction e.g. Outer 72×48, remove triangle base 36 height 24. Remaining area?
— Accuracy · last 5 attempts
Hard
Practice Area by completion and subtraction e.g. Outer 8.5×6, cutout 2.5×2 m. Remaining area?
— Accuracy · last 5 attempts
7. Polygon perimeter and area situations Member only
Polygon perimeter and area situations
Accuracy · last 5 attempts
Easy
Practice Polygon perimeter and area situations e.g. Pentagon garden sides 60,72,48,90,54 m. Fence length?
— Accuracy · last 5 attempts
Normal
Practice Polygon perimeter and area situations e.g. Wall area 280 m²; paint 120 baht/m². Cost?
— Accuracy · last 5 attempts
Hard
Practice Polygon perimeter and area situations e.g. Outer edges 24,16,12,8,12,24 m. Fence 180 baht/m. Cost?
— Accuracy · last 5 attempts
8. Applied polygons and multi-step situations Member only
Applied polygons and multi-step situations
Accuracy · last 5 attempts
Easy
Practice Applied polygons and multi-step situations e.g. Nonoverlapping rectangles 128×96, 64×48, triangle base 64 height 32. Total area?
— Accuracy · last 5 attempts
Normal
Practice Applied polygons and multi-step situations e.g. Total area 1200; unshaded parts 200,280, no overlap. Shaded area?
— Accuracy · last 5 attempts
Hard
Practice Applied polygons and multi-step situations e.g. Outer 400×300, remove rectangle 100×80 and triangle base 120 height 60, no overlap. Remaining area?
— Accuracy · last 5 attempts
Term 2
Chapter 8 วงกลม
1. Circle components and properties Member only
Circle components and properties
Accuracy · last 5 attempts
Easy
Practice Circle components and properties e.g. A is a circle, B an oval, C a square. Which is the circle?
— Accuracy · last 5 attempts
Normal
Practice Circle components and properties e.g. Must a diameter pass through the center?
— Accuracy · last 5 attempts
Hard
Practice Circle components and properties e.g. A chord does not pass through center. Is it a diameter?
— Accuracy · last 5 attempts
2. Circle construction and compasses Member only
Circle construction and compasses
Accuracy · last 5 attempts
Easy
Practice Circle construction and compasses e.g. Which tool constructs a circle of specified radius?
— Accuracy · last 5 attempts
Normal
Practice Circle construction and compasses e.g. Compass opening grows from 3 to 6 cm. Radius factor?
— Accuracy · last 5 attempts
Hard
Practice Circle construction and compasses e.g. Do center and radius determine a unique circle?
— Accuracy · last 5 attempts
3. Circumference Member only
Circumference
Accuracy · last 5 attempts
Easy
Practice Circumference e.g. What length does circumference measure?
— Accuracy · last 5 attempts
Normal
Practice Circumference e.g. Circle radius 20 cm. Circumference? Use π=3.14.
— Accuracy · last 5 attempts
Hard
Practice Circumference e.g. Radius grows by factor 2. Circumference factor?
— Accuracy · last 5 attempts
4. Circumference situations and wheels Member only
Circumference situations and wheels
Accuracy · last 5 attempts
Easy
Practice Circumference situations and wheels e.g. Round table radius 2.1 m. Border length? Use π=22/7.
— Accuracy · last 5 attempts
Normal
Practice Circumference situations and wheels e.g. Wheel 50 turns, distance 220 m. Circumference?
— Accuracy · last 5 attempts
Hard
Practice Circumference situations and wheels e.g. Wheel circumference 220 cm, 900 turns. Distance in m?
— Accuracy · last 5 attempts
5. Circle area Member only
Circle area
Accuracy · last 5 attempts
Easy
Practice Circle area e.g. What region does circle area measure?
— Accuracy · last 5 attempts
Normal
Practice Circle area e.g. Diameter 160 cm. Area in cm²? Use π=3.14.
— Accuracy · last 5 attempts
Hard
Practice Circle area e.g. Radius halves. What fraction of original area remains?
— Accuracy · last 5 attempts
6. Composite circles and shaded area Member only
Composite circles and shaded area
Accuracy · last 5 attempts
Easy
Practice Composite circles and shaded area e.g. Circle diameter 20 cm; square side equals d. Square area?
— Accuracy · last 5 attempts
Normal
Practice Composite circles and shaded area e.g. Outer area 1600 cm²; shaded circle area 628. Unshaded area?
— Accuracy · last 5 attempts
Hard
Practice Composite circles and shaded area e.g. Concentric radii 63,45 cm. Annulus area? Use π=22/7.
— Accuracy · last 5 attempts
7. Circle area situations Member only
Circle area situations
Accuracy · last 5 attempts
Easy
Practice Circle area situations e.g. Circular field radius 14 m. Area? Use π=22/7.
— Accuracy · last 5 attempts
Normal
Practice Circle area situations e.g. Circular bed area 154 m². Radius? Use π=22/7.
— Accuracy · last 5 attempts
Hard
Practice Circle area situations e.g. Land 160×160 m, pond radius 40 m. Land outside pond? Use π=3.14.
— Accuracy · last 5 attempts
8. Applied circles and multi-step situations Member only
Applied circles and multi-step situations
Accuracy · last 5 attempts
Easy
Practice Applied circles and multi-step situations e.g. Circular garden radius 77 m; fence 200 baht/m, grass 80 baht/m². Total cost? Use π=22/7.
— Accuracy · last 5 attempts
Normal
Practice Applied circles and multi-step situations e.g. Circular field radius 175 m; fence 100 baht/m, flooring 50 baht/m². Total? Use π=22/7.
— Accuracy · last 5 attempts
Hard
Practice Applied circles and multi-step situations e.g. Wheel radius 35 cm, 3500 turns. Distance in m? Use π=22/7.
— Accuracy · last 5 attempts
Term 2
Chapter 9 รูปเรขาคณิตสามมิติ
1. Types and properties of solids Member only
Types and properties of solids
Accuracy · last 5 attempts
Easy
Practice Types and properties of solids e.g. Square versus cube: which is three-dimensional?
— Accuracy · last 5 attempts
Normal
Practice Types and properties of solids e.g. Name a pyramid with a triangular base.
— Accuracy · last 5 attempts
Hard
Practice Types and properties of solids e.g. Which solid resembles a die?
— Accuracy · last 5 attempts
2. Solid components Member only
Solid components
Accuracy · last 5 attempts
Easy
Practice Solid components e.g. Prism with 4-sided base: how many faces?
— Accuracy · last 5 attempts
Normal
Practice Solid components e.g. Prism with 3-sided base: how many bases?
— Accuracy · last 5 attempts
Hard
Practice Solid components e.g. Pyramid with 5-sided base: how many lateral faces?
— Accuracy · last 5 attempts
3. Prism and pyramid nets Member only
Prism and pyramid nets
Accuracy · last 5 attempts
Easy
Practice Prism and pyramid nets e.g. What is a solid net?
— Accuracy · last 5 attempts
Normal
Practice Prism and pyramid nets e.g. Net of pentagonal pyramid: how many lateral faces?
— Accuracy · last 5 attempts
Hard
Practice Prism and pyramid nets e.g. Triangular-prism net has two triangles and two rectangles. What is missing?
— Accuracy · last 5 attempts
4. Cube and rectangular prism nets Member only
Cube and rectangular prism nets
Accuracy · last 5 attempts
Easy
Practice Cube and rectangular prism nets e.g. How many squares form a cube net?
— Accuracy · last 5 attempts
Normal
Practice Cube and rectangular prism nets e.g. Can seven squares be a cube net?
— Accuracy · last 5 attempts
Hard
Practice Cube and rectangular prism nets e.g. After folding, A is on the solid. Which face is opposite A?
— Accuracy · last 5 attempts
5. Composite rectangular-prism volume Member only
Composite rectangular-prism volume
Accuracy · last 5 attempts
Easy
Practice Composite rectangular-prism volume e.g. Box 24×15×12 cm. Volume?
— Accuracy · last 5 attempts
Normal
Practice Composite rectangular-prism volume e.g. Nonoverlapping prisms 24×18×9 and 12×9×6 units. Total volume?
— Accuracy · last 5 attempts
Hard
Practice Composite rectangular-prism volume e.g. Outer 108×72×45, removed/hollow 36×27×45 cm. Material volume?
— Accuracy · last 5 attempts
6. Composite container capacity Member only
Composite container capacity
Accuracy · last 5 attempts
Easy
Practice Composite container capacity e.g. What is capacity?
— Accuracy · last 5 attempts
Normal
Practice Composite container capacity e.g. Nonoverlapping interior compartments 40×30×20 and 20×30×20 cm. Total L?
— Accuracy · last 5 attempts
Hard
Practice Composite container capacity e.g. Water 90 L is3/4 of capacity. Full capacity?
— Accuracy · last 5 attempts
7. Volume and capacity situations Member only
Volume and capacity situations
Accuracy · last 5 attempts
Easy
Practice Volume and capacity situations e.g. Box 40×30×20 cm. Volume?
— Accuracy · last 5 attempts
Normal
Practice Volume and capacity situations e.g. Tank interior 700×350×280 cm. Capacity in L?
— Accuracy · last 5 attempts
Hard
Practice Volume and capacity situations e.g. Goods 27 m³, shipping 450 baht/m³. Cost?
— Accuracy · last 5 attempts
8. Applied solid geometry Member only
Applied solid geometry
Accuracy · last 5 attempts
Easy
Practice Applied solid geometry e.g. Nonoverlapping prisms 170×102×68, 102×68×51, 68×51×34 cm. Total?
— Accuracy · last 5 attempts
Normal
Practice Applied solid geometry e.g. Outer 220×165×110, remove nonoverlapping 55×44×110, 33×55×110 cm. Remaining?
— Accuracy · last 5 attempts
Hard
Practice Applied solid geometry e.g. Total 23400, A 9100, B 6500 cm³. Find C.
— Accuracy · last 5 attempts
Term 2
Chapter 10 การนำเสนอข้อมูล
1. Pie-chart components and meaning Member only
Pie-chart components and meaning
Accuracy · last 5 attempts
Easy
Practice Pie-chart components and meaning e.g. What chart divides a circle to show shares?
— Accuracy · last 5 attempts
Normal
Practice Pie-chart components and meaning e.g. What percentage does the whole pie represent?
— Accuracy · last 5 attempts
Hard
Practice Pie-chart components and meaning e.g. How many categories are shown?
— Accuracy · last 5 attempts
2. Reading pie charts Member only
Reading pie charts
Accuracy · last 5 attempts
Easy
Practice Reading pie charts e.g. From the chart, what percentage is category B?
— Accuracy · last 5 attempts
Normal
Practice Reading pie charts e.g. Order categories from greatest to least, using = for ties.
— Accuracy · last 5 attempts
Hard
Practice Reading pie charts e.g. Which categories are at least25%?
— Accuracy · last 5 attempts
3. Percentages and total quantities Member only
Percentages and total quantities
Accuracy · last 5 attempts
Easy
Practice Percentages and total quantities e.g. Total 2600 people. From the chart, how many in A?
— Accuracy · last 5 attempts
Normal
Practice Percentages and total quantities e.g. Total 600; A contains 150. What percent?
— Accuracy · last 5 attempts
Hard
Practice Percentages and total quantities e.g. From the chart, count A+B?
— Accuracy · last 5 attempts
4. Comparing pie-chart data Member only
Comparing pie-chart data
Accuracy · last 5 attempts
Easy
Practice Comparing pie-chart data e.g. How many percentage points does A exceed B?
— Accuracy · last 5 attempts
Normal
Practice Comparing pie-chart data e.g. Ratio A:B in lowest terms?
— Accuracy · last 5 attempts
Hard
Practice Comparing pie-chart data e.g. Which category ranks second?
— Accuracy · last 5 attempts
5. Missing pie-chart data Member only
Missing pie-chart data
Accuracy · last 5 attempts
Easy
Practice Missing pie-chart data e.g. What percent is the unlabeled final category?
— Accuracy · last 5 attempts
Normal
Practice Missing pie-chart data e.g. Total 3200, A 960, B 1280 people; remaining C percentage?
— Accuracy · last 5 attempts
Hard
Practice Missing pie-chart data e.g. Only these categories exist: 30%, 35%, 40%. Are the shares valid and complete100%?
— Accuracy · last 5 attempts
6. One- and two-step pie-chart situations Member only
One- and two-step pie-chart situations
Accuracy · last 5 attempts
Easy
Practice One- and two-step pie-chart situations e.g. From the chart, find A quantity as a quantity in the title’s unit.
— Accuracy · last 5 attempts
Normal
Practice One- and two-step pie-chart situations e.g. From the chart, find A quantity as a quantity in the title’s unit.
— Accuracy · last 5 attempts
Hard
Practice One- and two-step pie-chart situations e.g. From the chart, find C quantity as a quantity in the title’s unit.
— Accuracy · last 5 attempts
7. Multi-step pie-chart situations Member only
Multi-step pie-chart situations
Accuracy · last 5 attempts
Easy
Practice Multi-step pie-chart situations e.g. How many more in C than A?
— Accuracy · last 5 attempts
Normal
Practice Multi-step pie-chart situations e.g. A exceeds B by 960 people. Find total.
— Accuracy · last 5 attempts
Hard
Practice Multi-step pie-chart situations e.g. Category C sells at50 baht each. Revenue?
— Accuracy · last 5 attempts
8. Interpreting and applying pie-chart data Member only
Interpreting and applying pie-chart data
Accuracy · last 5 attempts
Easy
Practice Interpreting and applying pie-chart data e.g. Does the data support A being largest?
— Accuracy · last 5 attempts
Normal
Practice Interpreting and applying pie-chart data e.g. Which category is largest?
— Accuracy · last 5 attempts
Hard
Practice Interpreting and applying pie-chart data e.g. Is B greater than A?
— Accuracy · last 5 attempts
Make it a habit A short, focused practice session is a good place to start. You can always come back for more.
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