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10的加减法
1
9
4
10
7
10
2
10
9 + 1 =
9 + 1 = 10
10 - 1 =
9 + 1 = 10
1 + 9 =
10 - 1 = 9
9 + 1 = 10
1 + 9 = 10
10 - 1 = 9
10 - 9 =
8 + 2 =
8 + 2 = 10
10 - 2 =
8 + 2 = 10
2 + =
10 - 2 = 8
8 + 2 = 10
2 + 8 = 10
10 - 2 = 8
10 - =
7 + 3 =
7 + 3 = 10
10 - 3 =
7 + 3 = 10
+ =
10 - 3 = 7
7 + 3 = 10
3 + 7 = 10
10 - 3 = 7
- =
6 + =
6 + 4 = 10
10 - =
6 + 4 = 10
+ =
10 - 4 = 6
6 + 4 = 10
4 + 6 = 10
10 - 4 = 6
- =
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5 + 5 =
5 + 5 = 10
10 - 5 =