Why does 4 × 5 = 20?

Because adding 4 5's together makes 20.

That is, because 5 + 5 + 5 + 5 = 20.

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Keep practicing
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144

Why does 4 × 5 = 20?

Because adding 4 5's together makes 20.

That is, because 5 + 5 + 5 + 5 = 20.

Keep practicing