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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 14 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 651 to the nearest ten
2.Round 571 to the nearest ten
3.Round 403 to the nearest ten
4.Round 935 to the nearest ten
5.Round 785 to the nearest ten
6.Round 814 to the nearest ten
7.Round 842 to the nearest ten
8.Round 648 to the nearest ten
9.Round 659 to the nearest ten
10.Round 462 to the nearest ten
11.Round 395 to the nearest ten
12.Round 889 to the nearest ten

LessonPrint · 3.NBT.A.1 · Set 14 · free to copy for classroom use

Answer key — Round then Estimate

Set 14. Prints on its own sheet.

  1. 1.650
  2. 2.570
  3. 3.400
  4. 4.940
  5. 5.790
  6. 6.810
  7. 7.840
  8. 8.650
  9. 9.660
  10. 10.460
  11. 11.400
  12. 12.890

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