Why does 11 x 1 = 11?

Because adding 11 1's together makes 11.

That is, because 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 110 + 111 = 11.

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Keep practicing
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Why does 11 x 1 = 11?

Because adding 11 1's together makes 11.

That is, because 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 110 + 111 = 11.

Keep practicing