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Rounding and Estimating is a free printable Grade 5 math worksheet on using rounding to check a calculation, aligned to Common Core standard 5.NBT.A.4. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 9 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.

Rounding and Estimating

5.NBT.A.4

NameDate

Estimate first, then work it out.

1.Estimate 5.75 + 11.96 by rounding each number to the nearest whole number, then work it out.
2.Estimate 19.22 + 23.24 by rounding each number to the nearest whole number, then work it out.
3.Estimate 10.77 + 12.21 by rounding each number to the nearest whole number, then work it out.
4.Estimate 28.55 + 4.19 by rounding each number to the nearest whole number, then work it out.
5.Estimate 17.08 − 3.95 by rounding each number to the nearest whole number, then work it out.
6.Estimate 29.28 − 5.24 by rounding each number to the nearest whole number, then work it out.
7.Estimate 23.85 − 4.95 by rounding each number to the nearest whole number, then work it out.
8.Estimate 37.11 − 5.17 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 9 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 9. Prints on its own sheet.

  1. 1.about 18; exactly 17.71
  2. 2.about 42; exactly 42.46
  3. 3.about 23; exactly 22.98
  4. 4.about 33; exactly 32.74
  5. 5.about 13; exactly 13.13
  6. 6.about 24; exactly 24.04
  7. 7.about 19; exactly 18.9
  8. 8.about 32; exactly 31.94

Last reviewed 2026-09-05. Aligned to 5.NBT.A.4 of the Common Core State Standards for Mathematics.