Why does 10 × 4 = 40?

Because adding 10 4's together makes 40.

That is, because 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = 40.

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Why does 10 × 4 = 40?

Because adding 10 4's together makes 40.

That is, because 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = 40.

Keep practicing