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When adding 3 and -9, how do you know that the sum is negative?

1 Answer

4 votes

Answer:

You know it is negative because you are adding a small number and a bigger negative number. At first number lines are helpful to visualize it.

Explanation:

Maybe this will help:

Let's say you are borrowing money from a friend and need to pay them back. You own your friends $9, but you only have 3. So, you give them your $3. This leaves you owning $6.

3-9=-6

negative = owes money

User Venkataswamy
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