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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 15 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 460 to the nearest ten
2.Round 903 to the nearest ten
3.Round 943 to the nearest ten
4.Round 610 to the nearest ten
5.Round 463 to the nearest ten
6.Round 767 to the nearest ten
7.Round 348 to the nearest ten
8.Round 514 to the nearest ten
9.Round 947 to the nearest ten
10.Round 637 to the nearest ten
11.Round 399 to the nearest ten
12.Round 377 to the nearest ten

LessonPrint · 3.NBT.A.1 · Set 15 · free to copy for classroom use

Answer key — Round then Estimate

Set 15. Prints on its own sheet.

  1. 1.460
  2. 2.900
  3. 3.940
  4. 4.610
  5. 5.460
  6. 6.770
  7. 7.350
  8. 8.510
  9. 9.950
  10. 10.640
  11. 11.400
  12. 12.380

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