Lucas
Lucas is trying to find 6×15.
He knows that 3×15=45.
He also knows that 6=2×3.
How can Lucas use 3×15 to help him find 6×15?
He knows that 3×15=45.
He also knows that 6=2×3.
How can Lucas use 3×15 to help him find 6×15?
Correct answer:

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