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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 15 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 48 on the line.
405060
3.Mark 42 on the line.
405060
4.Mark 50 on the line.
050100
5.Mark 20 on the line.
02550
6.Mark 60 on the line.
020406080100

LessonPrint · 2.MD.B.6 · Set 15 · free to copy for classroom use

Answer key — Mark the Number

Set 15. Prints on its own sheet.

  1. 1.20 — 2 ticks from 0
  2. 2.48 — 4 ticks from 40
  3. 3.42 — 1 tick from 40
  4. 4.50 — 5 ticks from 0
  5. 5.20 — 4 ticks from 0
  6. 6.60 — 12 ticks from 0

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