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Number Line Addition and Subtraction to 20

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Tip: download the PDF for Letter or A4 paper, print it at 100% and use a pencil or crayon. Tap "Show solution" to check your answer, or print it as an answer key.

Up nextMissing Addends Within 20 →

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Five sums within 20, each with its own 0 to 20 number line and the starting number circled. Children draw a jump for every one they add or take away and write where they land. Watch the jumps cross 10: it shows why 8 + 5 can be done as 8 + 2, then 3 more. The answer key draws every jump.

Also try: Missing Addends Within 20 · Number Bonds to 20 · Number Line 0–20

Tips for this worksheet

  • Put a finger on the circled number before drawing any jumps.
  • Count the jumps aloud as you draw them: one, two, three…
  • Adding jumps to the right; taking away jumps to the left.

Every answer is a whole number from 0 to 20, and subtraction never goes below zero. When this sheet feels easy, move on to the hundreds chart and the compare number sentences worksheet.

For teachers and parents

What it practises
Addition and subtraction within 10 and 20, missing addends and number lines, fact families
How to use it
Read each fact aloud with its answer. Use counters or a number line for the first sheets, then try without them. Answers on page 2.
Time
About 10–15 minutes

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Printing tips

  • Keep ten counters or a ten frame nearby for the first sheets.
  • Say each fact aloud: “eight and five make thirteen”.
  • Mark with page 2 and redo the wrong facts the next day.

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