Page 108 - บทที่ 1
P. 108
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5x4 = 12 - 5 =
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5 + 3 = 3 + 3 = 8x6 =
5x7 = 9x9 = 16 - 7 =
4x1 = 5 - 4 = 7 + 9 =
2 - 0 = 2x7 = 4 + 7 =
3 + 4 = 6 + 5 = 5x5 =
9 + 2 = 18 - 9 = 3 + 5 =
10 - 1 = 2 + 6 = 3x3 =
4x5 = 5x6 = 7 - 1 =
15 - 8 = 9x3 = 9 + 7 =
7 - 5 = 3 - 2 = 12 - 9 =
3x6 = 7 + 6 = 6 + 9 =
4 + 5 = 9 - 5 = 4 - 2 =
14 - 6 = 5 + 7 = 3x5 =
8 + 6 = 11 - 9 = 3 + 1 =
12 - 4 = 2 + 8 = 2x8 =
3x9 = 4x6 = 11 - 8 =
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