1桁の足し算と引き算虫食い
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8 + 7 = 15 2 - 2 = 0
2 - 2 = 0 2 + 1 = 3
7 + 1 = 8 4 - 0 = 4
8 - 8 = 0 3 + 4 = 7
3 + 4 = 7 8 - 6 = 2
8 - 0 = 8 5 - 4 = 1
6 - 1 = 5 3 - 2 = 1
5 - 1 = 4 5 + 4 = 9
5 + 6 = 11 5 - 0 = 5
7 + 5 = 12 3 + 1 = 4
1 + 5 = 6 3 + 6 = 9
2 + 0 = 2 9 + 1 = 10
1 + 8 = 9 8 + 1 = 9
9 + 3 = 12 5 + 3 = 8
7 + 9 = 16 5 + 2 = 7
4 + 9 = 13 8 + 0 = 8
1 - 0 = 1 3 + 5 = 8
6 + 6 = 12 6 - 0 = 6
5 + 7 = 12 3 - 2 = 1
3 + 2 = 5 1 - 1 = 0
9 - 9 = 0 6 - 6 = 0
8 + 6 = 14 3 + 4 = 7
5 - 0 = 5 6 + 1 = 7
5 - 5 = 0 7 - 1 = 6
4 - 3 = 1 7 - 7 = 0
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