Skip to content
LessonPrint

Round then Estimate is a free printable Grade 3 maths worksheet on using rounding to check an answer, aligned to Common Core standard 3.NBT.A.1. It prints 12 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils 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.

Next set

One paper per pupil

12345678910111213141516171819202122232425

Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Round then Estimate

3.NBT.A.1

NameDate

Round each number.

1.Round 439 to the nearest ten
2.Round 855 to the nearest ten
3.Round 553 to the nearest ten
4.Round 669 to the nearest ten
5.Round 115 to the nearest ten
6.Round 826 to the nearest ten
7.Round 776 to the nearest ten
8.Round 311 to the nearest ten
9.Round 526 to the nearest ten
10.Round 896 to the nearest ten
11.Round 124 to the nearest ten
12.Round 113 to the nearest ten

LessonPrint · 3.NBT.A.1 · Set 12 · free to copy for classroom use

Answer key — Round then Estimate

Set 12. Prints on its own sheet.

  1. 1.440
  2. 2.860
  3. 3.550
  4. 4.670
  5. 5.120
  6. 6.830
  7. 7.780
  8. 8.310
  9. 9.530
  10. 10.900
  11. 11.120
  12. 12.110

Last reviewed 2026-09-05. Aligned to 3.NBT.A.1 of the Common Core State Standards for mathematics.