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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 23.36 + 9.99 by rounding each number to the nearest whole number, then work it out.
2.Estimate 29.96 + 10.09 by rounding each number to the nearest whole number, then work it out.
3.Estimate 12.10 + 11.10 by rounding each number to the nearest whole number, then work it out.
4.Estimate 27.90 + 6.46 by rounding each number to the nearest whole number, then work it out.
5.Estimate 10.71 − 4.40 by rounding each number to the nearest whole number, then work it out.
6.Estimate 17.78 − 8.29 by rounding each number to the nearest whole number, then work it out.
7.Estimate 33.66 − 6.80 by rounding each number to the nearest whole number, then work it out.
8.Estimate 32.19 − 8.61 by rounding each number to the nearest whole number, then work it out.

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

Answer key — Rounding and Estimating

Set 5. Prints on its own sheet.

  1. 1.about 33; exactly 33.35
  2. 2.about 40; exactly 40.05
  3. 3.about 23; exactly 23.2
  4. 4.about 34; exactly 34.36
  5. 5.about 7; exactly 6.31
  6. 6.about 10; exactly 9.49
  7. 7.about 27; exactly 26.86
  8. 8.about 23; exactly 23.58

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