While riding in the car, quiz your child on multiplication facts. Purchase a set of multiplication flash cards. Have your child practice measurement skills by using measuring spoons and cups during meal preparation. You can also have them read rulers, tape measures, and yard sticks while helping you measure items around the house. Give your child an allowance for doing household chores.
Children can then use their own money to purchase things they want.
Have your child pay the cashier and count back the change received from the purchase.