Why does 9 x 8 = 72?

Because adding 9 8's together makes 72.

That is, because 81 + 82 + 83 + 84 + 85 + 86 + 87 + 88 + 89 = 72.

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Why does 9 x 8 = 72?

Because adding 9 8's together makes 72.

That is, because 81 + 82 + 83 + 84 + 85 + 86 + 87 + 88 + 89 = 72.

Keep practicing