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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 17 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 25.08 + 27.01 by rounding each number to the nearest whole number, then work it out.
2.Estimate 9.03 + 28.39 by rounding each number to the nearest whole number, then work it out.
3.Estimate 17.66 + 17.38 by rounding each number to the nearest whole number, then work it out.
4.Estimate 9.49 + 12.98 by rounding each number to the nearest whole number, then work it out.
5.Estimate 19.70 − 6.57 by rounding each number to the nearest whole number, then work it out.
6.Estimate 33.39 − 6.28 by rounding each number to the nearest whole number, then work it out.
7.Estimate 32.28 − 4.37 by rounding each number to the nearest whole number, then work it out.
8.Estimate 39.88 − 8.68 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 17 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 17. Prints on its own sheet.

  1. 1.about 52; exactly 52.09
  2. 2.about 37; exactly 37.42
  3. 3.about 35; exactly 35.04
  4. 4.about 22; exactly 22.47
  5. 5.about 13; exactly 13.13
  6. 6.about 27; exactly 27.11
  7. 7.about 28; exactly 27.91
  8. 8.about 31; exactly 31.2

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