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math

math

7 cards·by lataviacolston@ymail

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Where this fits

Addition strategies: almost neighbours

Addition strategies

Subtraction strategies: think addition

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

Subtraction strategies: counting up

5+5

10

6-1

5

50+2

52

17+1

6

100+200

300

71+8

79

7+7

14