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Subtraction strategies: 10 frame

Addition strategies: 18-20

Subtraction strategies: think addition

Addition strategies: making 10

Addition strategies: almost neighbours

Canadian Provinces and capitals

Addition

Subtraction strategies: Zero facts

Addition strategies

Subtraction strategies: counting up

Subtraction strategies: counting back: 1,2,3

Addition strategies: 11+.., 12+..., etc.

Subtraction strategies: doubles

Addition strategies: doubles +1

Subtraction strategies: doubles -1

Addition strategies: 15+..., to 17+...