Three friends get to a party at 2 o'clock. They cut a pizza into 4 pieces. The friends eat one slice of pizza each. What fraction of the pizza is left? 1. Tell how to make sense of the problem. 2. Is there any missing or extra information? Explain. 3. Solve the problem. If information you need is missing, make up some reasonable information for the problem. You can draw a picture to help.