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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 4 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 823 to the nearest ten
2.Round 554 to the nearest ten
3.Round 600 to the nearest ten
4.Round 562 to the nearest ten
5.Round 307 to the nearest ten
6.Round 269 to the nearest ten
7.Round 838 to the nearest ten
8.Round 499 to the nearest ten
9.Round 933 to the nearest ten
10.Round 666 to the nearest ten
11.Round 730 to the nearest ten
12.Round 256 to the nearest ten

LessonPrint · 3.NBT.A.1 · Set 4 · free to copy for classroom use

Answer key — Round then Estimate

Set 4. Prints on its own sheet.

  1. 1.820
  2. 2.550
  3. 3.600
  4. 4.560
  5. 5.310
  6. 6.270
  7. 7.840
  8. 8.500
  9. 9.930
  10. 10.670
  11. 11.730
  12. 12.260

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