20以内的连加减法

20 以 内 的 连 加 减 法

12- 3 + 4 = 19 - 9 + 7 = 9 + 6 - 7 = 11 - 8 + 4 = 6 + 8 - 9 = 17 - 8 - 5 = 17 - 6 - 7 = 8 + 8 - 7 = 10 + 6 - 8 = 14 - 8 + 8 = 16 - 7 - 5 = 4 + 5 + 7 = 14 - 5 + 3 = 4 + 5 + 3 = 14 - 7 + 4 = 4 + 6 + 6 =

6 - 5 + 14 = 4 + 9 - 7 = 13 - 7 - 4 = 14 - 7 + 5 = 11 - 7 + 6 = 12 + 3 + 5 = 4 + 5 + 9 = 11 - 4 + 5 = 16 - 5 - 6 = 9 + 7 - 6 = 2 + 8 + 5 = 17 - 8 + 3 = 4 + 4 + 9 = 14 - 5 + 9 = 4 + 7 + 4 = 8 + 6 - 7 =

4 + 9 - 6 = 3 + 15 - 9 = 5 + 7 + 4 = 11 - 4 + 8 = 15 - 7 - 4 = 12 - 6 + 8 = 6 + 8 + 4 = 15 - 8 + 9 = 3 + 8 + 8 = 12 - 6 + 2 = 4 + 5 + 2 = 10 - 5 + 4 = 7 + 7 - 8 = 5 + 4 + 8 = 13 - 8 + 2 = 14 - 5 + 8 =

4 + 7 - 3 = 12 - 8 + 5 = 17 - 9 + 8 = 18 - 8 - 5 = 13 + 2 - 6 = 16 - 6 + 3 = 13 - 8 + 6 = 3 + 7 + 6 = 16 - 5 - 8 = 6 + 8 + 3 = 13 - 4 + 7 = 12 + 6 - 9 = 13 - 6 + 6 = 9 + 7 + 2 = 13 - 4 + 5 = 10 + 6 + 1 =

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