1桁の足し算と引き算(足し算の解18まで)
.
7 - 4 = 3 + 1 =
3 + 9 = 6 - 5 =
9 + 2 = 5 + 1 =
5 + 9 = 9 + 2 =
3 - 3 = 8 + 6 =
2 + 4 = 6 + 4 =
8 + 7 = 9 - 2 =
6 - 3 = 2 + 6 =
2 + 1 = 7 - 5 =
5 + 7 = 6 - 6 =
7 - 6 = 2 - 1 =
2 - 1 = 9 - 3 =
3 + 8 = 4 + 7 =
5 - 2 = 5 + 1 =
3 + 6 = 7 - 4 =
7 + 3 = 6 + 7 =
5 + 7 = 1 + 4 =
3 + 5 = 7 + 8 =
7 + 9 = 6 + 4 =
5 + 7 = 2 + 6 =
9 - 1 = 5 + 5 =
4 + 1 = 6 + 9 =
2 + 5 = 9 + 1 =
1 + 1 = 2 - 1 =
2 + 9 = 1 + 6 =
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