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