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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 12 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 22.96 + 28.88 by rounding each number to the nearest whole number, then work it out.
2.Estimate 3.91 + 26.75 by rounding each number to the nearest whole number, then work it out.
3.Estimate 10.35 + 5.40 by rounding each number to the nearest whole number, then work it out.
4.Estimate 10.91 + 21.82 by rounding each number to the nearest whole number, then work it out.
5.Estimate 14.98 − 3.55 by rounding each number to the nearest whole number, then work it out.
6.Estimate 20.26 − 8.27 by rounding each number to the nearest whole number, then work it out.
7.Estimate 12.43 − 6.96 by rounding each number to the nearest whole number, then work it out.
8.Estimate 13.99 − 6.16 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 12 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 12. Prints on its own sheet.

  1. 1.about 52; exactly 51.84
  2. 2.about 31; exactly 30.66
  3. 3.about 15; exactly 15.75
  4. 4.about 33; exactly 32.73
  5. 5.about 11; exactly 11.43
  6. 6.about 12; exactly 11.99
  7. 7.about 5; exactly 5.47
  8. 8.about 8; exactly 7.83

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