Round on a Number Line is a free printable Grade 3 math worksheet on placing a number between two tens or hundreds and choosing the nearer, aligned to Common Core standard 3.NBT.A.1. It prints 6 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 18 of 25 · the same problems every time you open this link.

One paper per student

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

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

Round on a Number Line

3.NBT.A.1

NameDate

Read each number line, then round.

1.What number is the arrow pointing to? Round it to the nearest ten.

2.What number is the arrow pointing to? Round it to the nearest ten.

3.What number is the arrow pointing to? Round it to the nearest ten.

4.What number is the arrow pointing to? Round it to the nearest hundred.

5.What number is the arrow pointing to? Round it to the nearest hundred.

6.What number is the arrow pointing to? Round it to the nearest hundred.

LessonPrint · 3.NBT.A.1 · Set 18 · free to copy for classroom use

Answer key — Round on a Number Line

Set 18. Prints on its own sheet.

1.27; 30
2.98; 100
3.76; 80
4.140; 100
5.420; 400
6.890; 900

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