Video

Equivalent expressions with negative numbers (multiplication and division) (Full video)

Khan Academy

Supporting grades: 7

Description: In this video, we figure out whether or not some expressions are equivalent. To do this, we think about properties of multiplication and division. What I hope to do in this video is a bunch of examples to show us that a lot of the properties we've been dealing with in arithmetic, the distributive property, associative property, commutative property, that these apply just as well to negative numbers. But with that said, it is good to actually see it used using negative numbers, or see these properties applied just to make sure that we understand what's going on. So this first one says, which of the following expressions are equivalent to negative two times the quantity five minus three?

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