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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.

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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 7.63 + 8.61 by rounding each number to the nearest whole number, then work it out.
2.Estimate 24.80 + 21.38 by rounding each number to the nearest whole number, then work it out.
3.Estimate 3.90 + 26.77 by rounding each number to the nearest whole number, then work it out.
4.Estimate 8.53 + 8.57 by rounding each number to the nearest whole number, then work it out.
5.Estimate 38.41 − 8.84 by rounding each number to the nearest whole number, then work it out.
6.Estimate 31.76 − 5.46 by rounding each number to the nearest whole number, then work it out.
7.Estimate 16.17 − 2.24 by rounding each number to the nearest whole number, then work it out.
8.Estimate 39.78 − 7.35 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 8 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 8. Prints on its own sheet.

  1. 1.about 17; exactly 16.24
  2. 2.about 46; exactly 46.18
  3. 3.about 31; exactly 30.67
  4. 4.about 18; exactly 17.1
  5. 5.about 29; exactly 29.57
  6. 6.about 27; exactly 26.3
  7. 7.about 14; exactly 13.93
  8. 8.about 33; exactly 32.43

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