How much change would you receive from $\$10$$10 if you spent $\$2$$2?
Opal has $\$20$$20. Xavier has $\$14$$14.
How much money do they have in total?
How much money do you have in total if you have $\$5$$5 and are given $\$3.50$$3.50 more?
How much change would you receive from $\$1$$1 if you spent $50c$50c?