1桁の足し算と引き算虫食い
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4 + 2 = 6 7 + 4 = 11
5 - 3 = 2 5 - 5 = 0
1 - 1 = 0 6 - 6 = 0
7 - 2 = 5 3 + 6 = 9
8 - 1 = 7 5 + 0 = 5
2 - 1 = 1 1 - 0 = 1
6 - 6 = 0 1 + 4 = 5
2 - 0 = 2 2 - 1 = 1
7 - 3 = 4 6 - 5 = 1
6 - 4 = 2 9 - 3 = 6
7 - 6 = 1 6 - 5 = 1
5 + 5 = 10 7 + 9 = 16
7 + 1 = 8 3 - 3 = 0
9 - 3 = 6 9 - 9 = 0
1 + 7 = 8 3 - 3 = 0
1 - 1 = 0 2 - 2 = 0
5 + 6 = 11 7 + 5 = 12
3 + 2 = 5 7 - 7 = 0
8 + 1 = 9 6 + 5 = 11
2 - 2 = 0 1 + 4 = 5
3 - 2 = 1 4 - 2 = 2
1 + 0 = 1 7 - 0 = 7
8 + 6 = 14 8 - 7 = 1
8 - 3 = 5 5 - 0 = 5
9 + 6 = 15 4 - 0 = 4
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