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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 3 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 7.35 + 25.66 by rounding each number to the nearest whole number, then work it out.
2.Estimate 6.18 + 23.39 by rounding each number to the nearest whole number, then work it out.
3.Estimate 29.86 + 2.86 by rounding each number to the nearest whole number, then work it out.
4.Estimate 28.45 + 25.38 by rounding each number to the nearest whole number, then work it out.
5.Estimate 18.53 − 5.64 by rounding each number to the nearest whole number, then work it out.
6.Estimate 18.51 − 8.94 by rounding each number to the nearest whole number, then work it out.
7.Estimate 32.91 − 7.00 by rounding each number to the nearest whole number, then work it out.
8.Estimate 11.01 − 3.24 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 3 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 3. Prints on its own sheet.

  1. 1.about 33; exactly 33.01
  2. 2.about 29; exactly 29.57
  3. 3.about 33; exactly 32.72
  4. 4.about 53; exactly 53.83
  5. 5.about 13; exactly 12.89
  6. 6.about 10; exactly 9.57
  7. 7.about 26; exactly 25.91
  8. 8.about 8; exactly 7.77

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