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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 6 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 25.70 + 29.99 by rounding each number to the nearest whole number, then work it out.
2.Estimate 21.51 + 7.45 by rounding each number to the nearest whole number, then work it out.
3.Estimate 24.53 + 4.29 by rounding each number to the nearest whole number, then work it out.
4.Estimate 26.94 + 29.53 by rounding each number to the nearest whole number, then work it out.
5.Estimate 13.25 − 8.98 by rounding each number to the nearest whole number, then work it out.
6.Estimate 15.48 − 3.17 by rounding each number to the nearest whole number, then work it out.
7.Estimate 24.89 − 6.55 by rounding each number to the nearest whole number, then work it out.
8.Estimate 39.66 − 2.14 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 6 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 6. Prints on its own sheet.

  1. 1.about 56; exactly 55.69
  2. 2.about 29; exactly 28.96
  3. 3.about 29; exactly 28.82
  4. 4.about 57; exactly 56.47
  5. 5.about 4; exactly 4.27
  6. 6.about 12; exactly 12.31
  7. 7.about 18; exactly 18.34
  8. 8.about 38; exactly 37.52

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