1桁の足し算と引き算虫食い
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2 - 2 = 0 1 - 0 = 1
1 + 0 = 1 1 + 7 = 8
2 - 1 = 1 8 + 9 = 17
2 - 0 = 2 2 + 2 = 4
2 - 2 = 0 5 - 2 = 3
5 + 5 = 10 5 - 4 = 1
1 - 0 = 1 7 + 3 = 10
4 + 7 = 11 7 + 6 = 13
7 - 6 = 1 3 - 1 = 2
4 + 4 = 8 8 + 6 = 14
9 + 8 = 17 4 - 1 = 3
6 - 0 = 6 5 - 5 = 0
5 + 3 = 8 6 - 5 = 1
9 + 5 = 14 8 + 7 = 15
1 + 9 = 10 4 + 2 = 6
9 + 4 = 13 8 - 0 = 8
8 + 0 = 8 8 + 8 = 16
7 - 7 = 0 3 + 4 = 7
7 - 0 = 7 1 - 1 = 0
5 + 1 = 6 9 + 2 = 11
1 - 0 = 1 9 + 6 = 15
6 + 4 = 10 1 + 7 = 8
9 - 3 = 6 6 - 2 = 4
4 + 2 = 6 2 + 3 = 5
1 - 1 = 0 3 - 0 = 3
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