Why does 9 x 5 = 45?

Because adding 9 5's together makes 45.

That is, because 51 + 52 + 53 + 54 + 55 + 56 + 57 + 58 + 59 = 45.

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Why does 9 x 5 = 45?

Because adding 9 5's together makes 45.

That is, because 51 + 52 + 53 + 54 + 55 + 56 + 57 + 58 + 59 = 45.

Keep practicing