Khan Academy

Description: Sal discusses how a digit in one place represents ten times what it represents in the place to its right. Created by Sal Khan. So the 4 in the number 5,634, that's literally in the ones place. In the number 3,779,264, how many times less is the value of the second 7 than the value of the first 7? So the second 7 right over here, that's in the ten thousands place.

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