Khan Academy

Description: Sal uses an area model to multiply 6x7981. Created by Sal Khan. Let's multiply 6 times 7,981. And the way we're going to do it right now is just to represent or expand out 7,981 as 7,000 plus 900 plus 80 plus 1. And to help us keep track of things, let me draw a little grid right over here.

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