1桁の足し算と引き算虫食い
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3 + 8 = 11 6 + 9 = 15
9 + 2 = 11 3 - 0 = 3
5 - 0 = 5 9 - 1 = 8
8 + 0 = 8 9 + 2 = 11
4 - 4 = 0 2 + 1 = 3
1 - 1 = 0 3 - 0 = 3
8 + 1 = 9 9 + 1 = 10
8 + 0 = 8 9 - 6 = 3
4 + 2 = 6 5 - 1 = 4
9 + 3 = 12 3 - 0 = 3
6 + 8 = 14 4 - 0 = 4
8 - 4 = 4 8 + 0 = 8
6 - 6 = 0 9 - 5 = 4
5 + 0 = 5 1 - 1 = 0
8 + 5 = 13 8 + 7 = 15
7 + 8 = 15 6 - 1 = 5
9 + 7 = 16 9 + 8 = 17
8 - 3 = 5 1 - 1 = 0
3 - 2 = 1 1 - 1 = 0
6 - 6 = 0 3 + 4 = 7
3 + 6 = 9 1 - 1 = 0
7 + 6 = 13 8 + 1 = 9
9 + 2 = 11 2 + 6 = 8
9 + 9 = 18 9 - 8 = 1
6 + 2 = 8 7 - 5 = 2
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