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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 16 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 13.32 + 20.71 by rounding each number to the nearest whole number, then work it out.
2.Estimate 24.29 + 18.12 by rounding each number to the nearest whole number, then work it out.
3.Estimate 6.04 + 23.22 by rounding each number to the nearest whole number, then work it out.
4.Estimate 16.44 + 23.08 by rounding each number to the nearest whole number, then work it out.
5.Estimate 29.43 − 6.58 by rounding each number to the nearest whole number, then work it out.
6.Estimate 12.60 − 8.79 by rounding each number to the nearest whole number, then work it out.
7.Estimate 23.57 − 3.40 by rounding each number to the nearest whole number, then work it out.
8.Estimate 13.70 − 5.80 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 16 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 16. Prints on its own sheet.

  1. 1.about 34; exactly 34.03
  2. 2.about 42; exactly 42.41
  3. 3.about 29; exactly 29.26
  4. 4.about 39; exactly 39.52
  5. 5.about 22; exactly 22.85
  6. 6.about 4; exactly 3.81
  7. 7.about 21; exactly 20.17
  8. 8.about 8; exactly 7.9

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