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

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One paper per student

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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 20 on the line.
050100
2.Mark 25 on the line.
020406080100
3.Mark 42 on the line.
405060
4.Mark 40 on the line.
050100
5.Mark 80 on the line.
050100
6.Mark 30 on the line.
02550

LessonPrint · 2.MD.B.6 · Set 10 · free to copy for classroom use

Answer key — Mark the Number

Set 10. Prints on its own sheet.

  1. 1.20 — 2 ticks from 0
  2. 2.25 — 5 ticks from 0
  3. 3.42 — 1 tick from 40
  4. 4.40 — 4 ticks from 0
  5. 5.80 — 8 ticks from 0
  6. 6.30 — 6 ticks from 0

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