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Round then Estimate is a free printable Grade 3 maths worksheet on using rounding to check an answer, aligned to Common Core standard 3.NBT.A.1. It prints 12 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 6 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Round then Estimate

3.NBT.A.1

NameDate

Round each number.

1.Round 787 to the nearest ten
2.Round 664 to the nearest ten
3.Round 790 to the nearest ten
4.Round 958 to the nearest ten
5.Round 627 to the nearest ten
6.Round 223 to the nearest ten
7.Round 108 to the nearest ten
8.Round 734 to the nearest ten
9.Round 375 to the nearest ten
10.Round 336 to the nearest ten
11.Round 453 to the nearest ten
12.Round 783 to the nearest ten

LessonPrint · 3.NBT.A.1 · Set 6 · free to copy for classroom use

Answer key — Round then Estimate

Set 6. Prints on its own sheet.

  1. 1.790
  2. 2.660
  3. 3.790
  4. 4.960
  5. 5.630
  6. 6.220
  7. 7.110
  8. 8.730
  9. 9.380
  10. 10.340
  11. 11.450
  12. 12.780

Last reviewed 2026-09-05. Aligned to 3.NBT.A.1 of the Common Core State Standards for mathematics.