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