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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 8 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 321 to the nearest ten
2.Round 693 to the nearest ten
3.Round 719 to the nearest ten
4.Round 392 to the nearest ten
5.Round 828 to the nearest ten
6.Round 215 to the nearest ten
7.Round 658 to the nearest ten
8.Round 858 to the nearest ten
9.Round 304 to the nearest ten
10.Round 965 to the nearest ten
11.Round 358 to the nearest ten
12.Round 183 to the nearest ten

LessonPrint · 3.NBT.A.1 · Set 8 · free to copy for classroom use

Answer key — Round then Estimate

Set 8. Prints on its own sheet.

  1. 1.320
  2. 2.690
  3. 3.720
  4. 4.390
  5. 5.830
  6. 6.220
  7. 7.660
  8. 8.860
  9. 9.300
  10. 10.970
  11. 11.360
  12. 12.180

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