How much change would you receive from $\$5$$5 if you spent $\$3.50$$3.50?
How much change would you receive from $\$5$$5 if you spent $\$1.65$$1.65?
How much change would you receive from $\$20$$20 if you spent $\$7$$7?
How much change would you receive from $\$20$$20 if you spent $\$7.50$$7.50?