Khan Academy

Description: Sal uses an area model to multiply 78x65. Created by Sal Khan. I'm going to multiply 78 times 65 in a little less than standard way, but hopefully it'll make some sense, and you realize that there's multiple ways that you can multiply. And then we're actually going to think about what the different parts of this process represent on this area model. And instead of just writing a 0 and carrying a 4 right over here, I'm just going to write the number 40.

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