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凑十法破十法综合练习题 (1)

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9 + 6 = 9 + 5 = 9 + 4 = 9 + 3 = 9 + 2 = 9 + 7 = 9 + 8 = 9 + 9 = 8 + 8 = 8 + 7 = 8 + 9 = 8 + 6 = 15 - 6 = 12

13 - 4 = 11

16 - 8 = 15

12 - 7 = 14

12 - 9 = 11 16 - 9 = 15 - 5 = 17 - 5 = 14 - 9 = 18 - 9 = 13 - 3 = 12 - 8 = 13 - 9 = - 7 = - 9 = - 7 = - 4 = - 8 =

11 - 6 = 13 - 4 = 14 - 5 =

13 - 9 = 17

8 + 5 = 8 + 4 = 8 + 3 =

7 + 9 = 7 + 8 =

7 + 6 = 7 + 4 = 7 + 5 = 6 + 9 = 6 + 8 = 6 + 7 =

6 + 6 = 6 + 5 = 5 - 8 = 14 - 6= 7 + 7 = + 9 =

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