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