What do you have to learn how to count back money and change on the cash register?

so they'll let you run the cash registerWhat do you have to learn how to count back money and change on the cash register?
basic math



make sure you give right change by adding back what was spent



if they spent 7.25 and they hand you a $20 bill change is 12.75

so add 7.25 +12.75 and you have $20What do you have to learn how to count back money and change on the cash register?
Depends on where you work, I work at Publix and they have a program that teaches you how to do everything. If you work in a smaller store, then you'll need to learn how to do basic math and be able to keep up with busy times. If you get overwhelmed by stuff, just ask someone to help you.
if you can't count back money and don't know how to add. what happens if the power goes out