1桁の足し算と引き算虫食い
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2 + 5 = 7 7 - 4 = 3
6 + 8 = 14 7 - 7 = 0
2 + 0 = 2 2 + 7 = 9
6 - 4 = 2 9 + 1 = 10
6 - 1 = 5 7 - 6 = 1
8 - 4 = 4 7 - 0 = 7
4 - 2 = 2 5 - 4 = 1
6 - 3 = 3 4 + 1 = 5
7 + 2 = 9 6 + 8 = 14
4 + 6 = 10 1 - 0 = 1
1 + 4 = 5 6 + 4 = 10
8 - 1 = 7 2 + 0 = 2
3 + 5 = 8 9 + 0 = 9
4 - 2 = 2 7 - 0 = 7
7 - 1 = 6 8 - 4 = 4
6 + 5 = 11 3 - 0 = 3
1 + 4 = 5 4 + 8 = 12
5 + 7 = 12 3 - 0 = 3
2 - 0 = 2 2 + 4 = 6
4 - 3 = 1 1 + 2 = 3
4 - 0 = 4 7 - 7 = 0
1 + 3 = 4 7 + 0 = 7
4 - 4 = 0 1 + 3 = 4
4 - 4 = 0 8 + 9 = 17
9 + 7 = 16 5 + 8 = 13
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