1桁の足し算と引き算虫食い
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3 - 1 = 2 3 + 9 = 12
3 - 1 = 2 9 + 9 = 18
3 - 3 = 0 9 - 8 = 1
9 - 9 = 0 7 - 6 = 1
8 + 5 = 13 8 + 4 = 12
3 - 2 = 1 7 + 8 = 15
9 + 8 = 17 8 + 4 = 12
8 - 4 = 4 3 + 6 = 9
1 + 0 = 1 9 - 8 = 1
5 - 2 = 3 1 + 1 = 2
6 + 1 = 7 2 - 1 = 1
6 - 1 = 5 3 - 0 = 3
6 - 5 = 1 4 + 1 = 5
3 + 2 = 5 3 - 2 = 1
1 + 5 = 6 7 - 6 = 1
4 - 1 = 3 9 - 9 = 0
8 + 6 = 14 8 + 1 = 9
2 + 2 = 4 5 + 3 = 8
1 + 8 = 9 8 + 3 = 11
8 - 8 = 0 8 - 3 = 5
7 - 4 = 3 7 - 6 = 1
9 + 1 = 10 4 + 2 = 6
6 + 8 = 14 8 - 1 = 7
7 - 4 = 3 9 + 2 = 11
8 + 7 = 15 4 - 4 = 0
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