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Integers are #'s that are either positive or negative. For example, A positive # would be 3 or 1. A negative # would be -1 or -3. You can use chip models to help you when you subtract integers. lets pretend that a 3 is a red chip which is negative. And positive is 4 which is a positive. We are going to subtract -5 - (-13)= the parentithies are to make sure you don't get the signs mixed up.

Here is the model. 33333

44444444444444 We would see how many 3's there are, negative chips which would be red. there are 5 so we take away 5 of the 4rs, positive chips which would be positive. Now this is what we get for the model.

44444444 That is the answer.

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