How can you represent negative numbers in real life?

Question

I think the the question is pretty self explanatory.

With positive numbers you can let’s say put 3 balls in a box and there you have it, a representation of the positive number 3.

Same goes with 0, a box with 0 balls represent the amount 0.

But how do you do that with a negative number?

In: 0

Answer 1

With the concept of debt. If you owe me $5, you have -$5. If you then pay me $3 you still have -$2