How Many Pizzas Should You Order? The Pizza Equation Will Tell YouJulia Alvidrez4/27/15 2:50pm41646EditPromoteGo to permalinkAt some point in your life you will be asked to order pizza for a group. When that time comes, don’t be afraid. All the information you need to determine how many pies to order can be found in the pizza itself. Because what is a pizza if not a tool for learning fractions?