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