One more and one less of numbers beyond 20
In this lesson, we will look again at numbers beyond twenty, and using a numberline or representation that uses tens and ones, practise saying one more and one less.
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These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.