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Year 1 · Counting & Number

Missing numbers to 20

A number line shows numbers in order. Equal jumps mean equal amounts.

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How to do it

  1. Find two labelled numbers and work out the size of one jump.
  2. Count jumps from a labelled number to the mark you need.

Worked example

Count on in 1s from 0
4 jumps of 1
4

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Watch out
Count the jumps, not the marks.

Practise Missing numbers to 20 properly

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