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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 17 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 859 to the nearest ten
2.Round 539 to the nearest ten
3.Round 770 to the nearest ten
4.Round 104 to the nearest ten
5.Round 261 to the nearest ten
6.Round 695 to the nearest ten
7.Round 300 to the nearest ten
8.Round 721 to the nearest ten
9.Round 265 to the nearest ten
10.Round 410 to the nearest ten
11.Round 431 to the nearest ten
12.Round 114 to the nearest ten

LessonPrint · 3.NBT.A.1 · Set 17 · free to copy for classroom use

Answer key — Round then Estimate

Set 17. Prints on its own sheet.

  1. 1.860
  2. 2.540
  3. 3.770
  4. 4.100
  5. 5.260
  6. 6.700
  7. 7.300
  8. 8.720
  9. 9.270
  10. 10.410
  11. 11.430
  12. 12.110

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