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