Skip to content
LessonPrint

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 15 of 25 · the same problems every time you open this link.

Next set

One paper per student

12345678910111213141516171819202122232425

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 20.91 + 26.28 by rounding each number to the nearest whole number, then work it out.
2.Estimate 28.63 + 13.92 by rounding each number to the nearest whole number, then work it out.
3.Estimate 5.74 + 16.21 by rounding each number to the nearest whole number, then work it out.
4.Estimate 27.30 + 7.61 by rounding each number to the nearest whole number, then work it out.
5.Estimate 33.78 − 2.56 by rounding each number to the nearest whole number, then work it out.
6.Estimate 23.47 − 5.75 by rounding each number to the nearest whole number, then work it out.
7.Estimate 23.99 − 2.66 by rounding each number to the nearest whole number, then work it out.
8.Estimate 27.05 − 6.65 by rounding each number to the nearest whole number, then work it out.

LessonPrint · 5.NBT.A.4 · Set 15 · free to copy for classroom use

Answer key — Rounding and Estimating

Set 15. Prints on its own sheet.

  1. 1.about 47; exactly 47.19
  2. 2.about 43; exactly 42.55
  3. 3.about 22; exactly 21.95
  4. 4.about 35; exactly 34.91
  5. 5.about 31; exactly 31.22
  6. 6.about 17; exactly 17.72
  7. 7.about 21; exactly 21.33
  8. 8.about 20; exactly 20.4

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