1-6. 곱셈
1 7 x 4 =
2 9 x 4 =
3 7 x 3 =
4 6 x 3 =
5 5 x 4 =
6 5 x 2 =
7 3 x 8 =
8 3 x 5 =
9 2 x 6 =
10 5 x 5 =
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