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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 22 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 6.46 + 6.43 by rounding each number to the nearest whole number, then work it out.
2.Estimate 27.39 + 12.68 by rounding each number to the nearest whole number, then work it out.
3.Estimate 21.74 + 13.85 by rounding each number to the nearest whole number, then work it out.
4.Estimate 24.16 + 18.04 by rounding each number to the nearest whole number, then work it out.
5.Estimate 35.02 − 5.64 by rounding each number to the nearest whole number, then work it out.
6.Estimate 29.67 − 7.69 by rounding each number to the nearest whole number, then work it out.
7.Estimate 16.16 − 5.42 by rounding each number to the nearest whole number, then work it out.
8.Estimate 25.06 − 6.30 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 22 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 22. Prints on its own sheet.

  1. 1.about 12; exactly 12.89
  2. 2.about 40; exactly 40.07
  3. 3.about 36; exactly 35.59
  4. 4.about 42; exactly 42.2
  5. 5.about 29; exactly 29.38
  6. 6.about 22; exactly 21.98
  7. 7.about 11; exactly 10.74
  8. 8.about 19; exactly 18.76

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