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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 14 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 20.84 + 20.36 by rounding each number to the nearest whole number, then work it out.
2.Estimate 14.55 + 6.28 by rounding each number to the nearest whole number, then work it out.
3.Estimate 22.72 + 21.49 by rounding each number to the nearest whole number, then work it out.
4.Estimate 2.42 + 26.84 by rounding each number to the nearest whole number, then work it out.
5.Estimate 15.30 − 5.04 by rounding each number to the nearest whole number, then work it out.
6.Estimate 32.34 − 7.20 by rounding each number to the nearest whole number, then work it out.
7.Estimate 12.77 − 2.03 by rounding each number to the nearest whole number, then work it out.
8.Estimate 28.98 − 6.77 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 14 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 14. Prints on its own sheet.

  1. 1.about 41; exactly 41.2
  2. 2.about 21; exactly 20.83
  3. 3.about 44; exactly 44.21
  4. 4.about 29; exactly 29.26
  5. 5.about 10; exactly 10.26
  6. 6.about 25; exactly 25.14
  7. 7.about 11; exactly 10.74
  8. 8.about 22; exactly 22.21

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