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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 2 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 14.67 + 9.84 by rounding each number to the nearest whole number, then work it out.
2.Estimate 29.67 + 25.30 by rounding each number to the nearest whole number, then work it out.
3.Estimate 26.64 + 11.89 by rounding each number to the nearest whole number, then work it out.
4.Estimate 3.72 + 19.44 by rounding each number to the nearest whole number, then work it out.
5.Estimate 16.19 − 7.33 by rounding each number to the nearest whole number, then work it out.
6.Estimate 25.18 − 2.49 by rounding each number to the nearest whole number, then work it out.
7.Estimate 17.39 − 8.88 by rounding each number to the nearest whole number, then work it out.
8.Estimate 28.21 − 4.12 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 2 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 2. Prints on its own sheet.

  1. 1.about 25; exactly 24.51
  2. 2.about 55; exactly 54.97
  3. 3.about 39; exactly 38.53
  4. 4.about 23; exactly 23.16
  5. 5.about 9; exactly 8.86
  6. 6.about 23; exactly 22.69
  7. 7.about 8; exactly 8.51
  8. 8.about 24; exactly 24.09

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