The Commutative Property ... So, What?

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Uploaded by on Sep 18, 2008

The communtative property: what is is, and why it's worth knowing.

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  • Cool video. But you should mention that you can MAKE a subtraction commutative by turning it into an addition problem. That is: 7- 5 is not commutative but 7 + -5 is commutative, and it means the same thing. As long as I take the negative sign along with me, I can say -5 + 7 and I will get the same answer: 2.

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