Working out change

This task is about getting change after buying something.
When you go to the dairy to buy things sometimes you are given change. 
You will be given some plastic money to help you work out the change you would get if you bought each of the following things.

Question 1Change answer

Write how much change you would get on the table.
  What you buy Money you give Change you get
a)
peanut butter
$2.00
 
$5.00
 
b)
ice cream cone
$1.50
 
$2.00
 
c)
chocolate bar
$3.20
 
$4.00