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9 x 68

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mastered

9 x 68

612

Well, 9 x 60 = 540, and 9 x 8 = 72, so 540 + 72 = 612. ----Alternately, 9 = 10 - 1, so 68(9) = 68(10 - 1) = 680 - 68 = 612.
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