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Butterfly Number Bonds - all numbers to 20

A maths facts tester for number facts to 20.

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Click on the button which combines with the number between the antennae to make the target number (on the head). Do you know your addition and subtraction facts for all your numbers to 20?

The yellow square can also be clicked, to reveal helpful number sentences at the top of the butterfly.


Make sure you check out other similar items.


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