. Grade 7, Illustrative icon
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Illustrative MathematicsVaries

Many people like to use debt to help students understand negative numbers. When doing so, it is important to keep in mind that representing debt with negative numbers is a convention, and that it would be possible to talk about debt without ever using negative numbers. For example, if I borrow $30 from my cousin, I owe her +30 dollars. If I give her $40, then she owes me +10 dollars.

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