Why does 10 x 12 = 120?

Because adding 10 12's together makes 120.

That is, because 121 + 122 + 123 + 124 + 125 + 126 + 127 + 128 + 129 + 1210 = 120.

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Why does 10 x 12 = 120?

Because adding 10 12's together makes 120.

That is, because 121 + 122 + 123 + 124 + 125 + 126 + 127 + 128 + 129 + 1210 = 120.

Keep practicing