If Jamie has five dollars and purchases a soda for one dollar and fifteen cents, how much change does Jamie get back
5.00-1.15=3.85
You get this answer by "borrowing" from the 5, the first 0 becomes a 10, cross it out it becomes a 9, the second 0 becomes a 10.
4-1=3, 9-1=8, and 10-5=5