Show them what they will use it for, reading labels, adding prices, depending on their age and what they are working on. Take them to the dollar tree and show them how to add and figure tax. Give them a few dollars to spend.Figure together how much money your child gets in allowance and how to save each week to get that new toy he wants, and when he can have it by. Plan family vacations together and show your teens how to figure expected costs. Showing kids how they will use math in real life will make them more willing to learn it.