Mark the Number is a free printable Grade 2 math worksheet on placing a whole number on a number line, aligned to Common Core standard 2.MD.B.6. 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 21 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.

Mark the Number

2.MD.B.6

NameDate

Mark each number with an arrow.

1.Mark 35 on the line.

2.Mark 46 on the line.

3.Mark 35 on the line.

4.Mark 2 on the line.

5.Mark 18 on the line.

6.Mark 45 on the line.

LessonPrint · 2.MD.B.6 · Set 21 · free to copy for classroom use

Answer key — Mark the Number

Set 21. Prints on its own sheet.

1.35 — 7 ticks from 0
2.46 — 3 ticks from 40
3.35 — 7 ticks from 0
4.2 — 1 tick from 0
5.18 — 9 ticks from 0
6.45 — 9 ticks from 0

Last reviewed 2026-09-05. Aligned to 2.MD.B.6 of the Common Core State Standards for Mathematics.