Shopping is full of money questions. This 3rd grade change and total cost worksheet gives your child three money word problems to solve. First, Belta buys groceries for $10.79 and pays with a twenty-dollar bill, so your child works out her change. After that, Peter buys three things to make a pizza, and John and Lucy pay for their dinner. In these two stories, your child adds the prices to find the total cost. Page two is the answer key, where every problem is solved in neat columns.