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