Originally Posted by

**MoneyStudent** Okay, so I did some practicing.

Here's my excercise.

Amount Paid: 20.00

Total Cost: 2.71

Customer's Change: 17.21

The subtraction goes like this I guess

20.00

-2.71

______

17.29

The first 0 on the far right becomes a 10.

The second 0 second from the far right becomes a 9.

The third 0 from the right becomes a 9 as well.

The 2 on the left becomes a 1.

Now I was counting back.

I counted back 4 pennies, 1 nickle, 2 dimes... I guess that gives a dollar? I know it gets sums up the ".00" in the "20.00" xD