Choose a chapter; tab colors indicate the term. Available quizzes cover the listed skills. Addition, subtraction, multiplication and division are in Basic.

Term 1

Chapter 1 จำนวนนับที่มากกว่า 100,000

1. Reading and writing large numbers

Reading and writing large numbers

Accuracy · last 5 attempts

• Easy Practice reading and writing large numbers e.g. How is 877,573 read? —Accuracy · last 5 attempts
• Normal Practice reading and writing large numbers e.g. Write “two million eight hundred and sixty-seven thousand eight hundred and twenty-six” as a numeral. —Accuracy · last 5 attempts
• Hard Practice reading and writing large numbers e.g. Is “ninety-five million eight hundred and thirty-one thousand four hundred and thirteen” the correct reading of 95,822,413? —Accuracy · last 5 attempts

2. Places and digit values Member only

Places and digit values

Accuracy · last 5 attempts

• Easy Practice places and digit values e.g. Which place is the bracketed digit in 770[4]88? —Accuracy · last 5 attempts
• Normal Practice places and digit values e.g. Give the place value and digit value of the bracketed digit in 2867[8]26. —Accuracy · last 5 attempts
• Hard Practice places and digit values e.g. Is digit 4 in the hundreds place worth 400? —Accuracy · last 5 attempts

3. Expanded forms Member only

Expanded forms

Accuracy · last 5 attempts

• Easy Practice expanded forms e.g. Which is the expanded form of 770,488? —Accuracy · last 5 attempts
• Normal Practice expanded forms e.g. 2,867,826 = 2,000,000 + 800,000 + 60,000 + 7,000 + 800 + 20 + □. Fill the missing value. —Accuracy · last 5 attempts
• Hard Practice expanded forms e.g. A child writes 3,001,050 = 3,000,000 + 10,000 + 50. Why is it wrong? —Accuracy · last 5 attempts

4. Comparing large numbers Member only

Comparing large numbers

Accuracy · last 5 attempts

• Easy Practice comparing large numbers e.g. Fill the relation: 770,488 □ 761,488 —Accuracy · last 5 attempts
• Normal Practice comparing large numbers e.g. Fill the relation: 2,867,826 □ 2,858,826 —Accuracy · last 5 attempts
• Hard Practice comparing large numbers e.g. Where should comparison of 95,822,413 and 95,813,413 begin? —Accuracy · last 5 attempts

5. Ordering and number patterns Member only

Ordering and number patterns

Accuracy · last 5 attempts

• Easy Practice ordering and number patterns e.g. Order 784,488, 773,488, 864,488 from smallest to largest. —Accuracy · last 5 attempts
• Normal Practice ordering and number patterns e.g. Give one integer strictly between 2,867,826 and 2,877,826. —Accuracy · last 5 attempts
• Hard Practice ordering and number patterns e.g. Is this order correct: 95,822,413 < 95,824,413 < 95,823,413? —Accuracy · last 5 attempts

6. Rounding to tens, hundreds and thousands Member only

Rounding to tens, hundreds and thousands

Accuracy · last 5 attempts

• Easy Practice rounding to tens, hundreds and thousands e.g. Round 770,488 to the nearest tens. —Accuracy · last 5 attempts
• Normal Practice rounding to tens, hundreds and thousands e.g. Round 2,867,826 to the nearest tens. —Accuracy · last 5 attempts
• Hard Practice rounding to tens, hundreds and thousands e.g. A child rounds 95,822,413 to hundreds by looking at hundreds. What is wrong? —Accuracy · last 5 attempts

7. Rounding to ten-thousands, hundred-thousands and millions Member only

Rounding to ten-thousands, hundred-thousands and millions

Accuracy · last 5 attempts

• Easy Practice rounding to ten-thousands, hundred-thousands and millions e.g. Round 770,488 to the nearest ten-thousands. —Accuracy · last 5 attempts
• Normal Practice rounding to ten-thousands, hundred-thousands and millions e.g. Round 2,867,826 to the nearest ten-thousands. —Accuracy · last 5 attempts
• Hard Practice rounding to ten-thousands, hundred-thousands and millions e.g. Which is more precise: rounding to ten-thousands or millions? —Accuracy · last 5 attempts

8. Applying estimation Member only

Applying estimation

Accuracy · last 5 attempts

• Easy Practice applying estimation e.g. Simulated data: 770,488 people. Round to the nearest thousands. —Accuracy · last 5 attempts
• Normal Practice applying estimation e.g. Simulated data: 2,867,826 items. Round to the nearest thousands. —Accuracy · last 5 attempts
• Hard Practice applying estimation e.g. When rounding 95,822,413 to millions, inspect hundred-thousands or ten-thousands? —Accuracy · last 5 attempts