Grade 3 - Math

Grade 3 Rounding to 10 and 100 Worksheet

6 printable versions - Challenge Me - About 9 minutes each

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Rounding to 10 and 100

Grade 3 - Math - Challenge Me

Worksheet 1
  1. Round 522 to the nearest ten.

    A number line from 520 to 530.A number line labelled from 520 to 530, marked every 1.520521522523524525526527528529530
  2. Round 709 to the nearest hundred.

    A number line from 700 to 800.A number line labelled from 700 to 800, marked every 10.700710720730740750760770780790800
  3. Which two tens does 589 fall between?

  4. Which two hundreds does 798 fall between?

  5. Which digit decides how 648 rounds to the nearest hundred?

  6. Round 664 to the nearest ten.

    A number line from 660 to 670.A number line labelled from 660 to 670, marked every 1.660661662663664665666667668669670
  7. Round 457 to the nearest hundred.

    A number line from 400 to 500.A number line labelled from 400 to 500, marked every 10.400410420430440450460470480490500
  8. Which two tens does 475 fall between?

  9. Which two hundreds does 905 fall between?

  10. Which digit decides how 522 rounds to the nearest hundred?

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About this worksheet

Rounding helps third graders estimate with numbers that are easier to use mentally. The skill is not simply chopping off digits; students must decide which benchmark a number is closest to. The hardest cases are halfway values and numbers where the tens and hundreds decisions differ. This worksheet rotates between rounding to the nearest ten, rounding to the nearest hundred, choosing the two benchmarks around a number, and explaining which digit controls the decision. Number-line visuals appear when they show the interval and hide no answer. Support versions use numbers far from the halfway point. Standard and challenge versions include closer calls. Encourage your child to name the two possible rounded numbers first, then decide which one is nearer. Each question names the rounding target so students attend to tens or hundreds on purpose.

What your child will learn

  • Round numbers to the nearest ten
  • Round numbers to the nearest hundred
  • Use halfway points on a number line
  • Choose estimates from place-value clues

Worked example

347 rounds to 350 to the nearest ten because it is closer to 350 than 340.

Common mistake

Changing every digit after the rounded place without checking which benchmark is closer.

Helpful hint

Find the two benchmarks, then choose the closer one.

Questions parents ask

What is the most common mistake with rounding to 10 and 100?
Changing every digit after the rounded place without checking which benchmark is closer.
How can I help my child with rounding to 10 and 100?
Find the two benchmarks, then choose the closer one.
Are these 3rd grade math worksheets free to print?
Yes. All 6 printable versions on this page are free to download and print, with no account needed.

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