Working with Large Numbers · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Comparing and Ordering Large Numbers

Mathematics · Number Representation & Place Value · ages 9-10
Name ______________________   Date ____________

  1. In the number 673,000, which digit sits in the hundred-thousands place, the place that controls how big a six-digit number is?

    • 7
    • 6
    • 3

  2. True or false: 612,345 rounded to the nearest thousand is 612,000.

    Circle one:   True   False

  3. Round 342,891 to the nearest ten thousand.

    • 340,000
    • 350,000
    • 300,000
    • 342,900

  4. Which number is greater: 245,600 or 245,060?

    • 245,600
    • 245,060
    • They are equal

  5. A concert drew 458,732 people over the weekend. Rounded to the nearest ten thousand for a headline, what number should the paper print?

    • 450,000
    • 460,000
    • 458,000
    • 500,000

  6. A city's population was 234,680. Rounded to the nearest ten thousand for a report, which is correct?

    • 230,000
    • 240,000
    • 234,000

  7. Round 815,499 to the nearest hundred thousand.

    Answer: ______________

  8. Among five cities, the largest population is 512,300 and the smallest is 498,750. What is the difference between them?

    Answer: ______________

  9. Round 999,650 to the nearest thousand.

    Answer: ______________

  10. Which of these is the largest six-digit number whose digits add up to 15?

    • 951,000
    • 960,000
    • 900,006
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Answer key

For grown-ups. Fold this page away before handing over the rest.

Comparing and Ordering Large Numbers W1-mt_xMt1TLTs---s1

  1. 6 · The hundred-thousands place is the leftmost digit in a six-digit number.
  2. True · The hundreds digit in 612,345 is 3, which is less than 5, so it rounds down to 612,000.
  3. 340,000 · 342,891 rounds to 340,000 because the thousands digit is 2, which is less than 5.
  4. 245,600 · Compare from the left. The first difference is in the hundreds place: 6 is greater than 0.
  5. 460,000 · 458,732 rounds up to 460,000 because the thousands digit is 8, which is 5 or more.
  6. 230,000 · Look at the ten-thousands place. The digit right after it is 4, less than 5, so round down to 230,000.
  7. 800000 · 815,499 rounds to 800,000 because the ten thousands digit is 1, which is less than 5.
  8. 13550 · Subtract the smallest from the largest: 512,300 minus 498,750 equals 13,550.
  9. 1000000 · 999,650 rounds up to 1,000,000 because the hundreds digit is 6, which pushes every digit up in a chain.
  10. 960,000 · To build the biggest number, put as much of the sum as you can into the leftmost digit: 9, then 6, then zeros. 9 + 6 + 0 + 0 + 0 + 0 = 15.
Worksheet · LightMySky