1. There are 31 cakes. Each cake is cut into 8 parts. Each part is further cut into 3 pieces. How many cake pieces are there in all?   2. The Professors at the State University drank 182 cups of tea yesterday. They drank 71 cups in the morning and 62 in the afternoon. How many did they drink in the evening?   3. Warren has a collection of 119 books. He donated 19 books last year and 24 books this year. How many books does he still have?   4. A school has 4 dining halls. Each dining hall has28 tables. If there are four children to each table, how many children stay for lunch?   5. Last month, Jack worked for 189 hours, Greg worked for 156 hours, and Edward worked 31 hours more than Jack. How many hours did they work altogether?