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