Know that addition and subtraction are inverse operations
Lesson 8 / 10
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I can recognise addition and subtraction as the inverse of each other.
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Addition is the inverse of subtraction. Addition can 'undo' subtraction.
Subtraction is the inverse of addition. Subtraction can 'undo' addition.
When a given amount is added to the start of a story, to 'undo' the change, we must subtract the same amount.
When a given amount is subtracted from the start of a story, to 'undo' the change we must add the same amount.
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