Question

Jon has -8 dollars in his account then adds 12 dollars, how much does he have now?


What does zero represent in your story problem?

Answer 1

-8 in account
adds 12 dollars

-8 (+12) = 4

Jon now has 4 dollars in his account

i don't know how to explain the zero part well, but it is like the place where your bank have to be in order to not have debt