1桁の足し算と引き算虫食い
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7 + 4 = 11 2 - 0 = 2
7 - 1 = 6 7 + 1 = 8
3 + 2 = 5 2 + 7 = 9
2 - 0 = 2 6 + 6 = 12
8 + 8 = 16 3 + 9 = 12
9 + 7 = 16 7 - 4 = 3
7 + 7 = 14 9 + 1 = 10
8 - 1 = 7 1 + 8 = 9
4 - 1 = 3 1 + 6 = 7
4 + 8 = 12 3 + 6 = 9
9 + 0 = 9 1 + 3 = 4
4 - 3 = 1 8 + 9 = 17
3 - 0 = 3 2 - 0 = 2
8 - 2 = 6 3 - 1 = 2
1 - 1 = 0 7 + 0 = 7
6 + 0 = 6 6 + 3 = 9
4 - 3 = 1 8 + 0 = 8
1 + 4 = 5 8 + 3 = 11
7 - 5 = 2 5 - 3 = 2
9 + 9 = 18 2 + 0 = 2
6 + 8 = 14 5 + 7 = 12
8 + 3 = 11 1 + 4 = 5
6 - 3 = 3 6 - 5 = 1
8 + 0 = 8 6 - 0 = 6
3 - 2 = 1 4 - 0 = 4
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