1. There are 30 cakes. Each cake is cut into 7 parts. Each part is further cut into 2 pieces. How many cake pieces are there in all?   2. The Professors at the State University drank 185 cups of tea yesterday. They drank 66 cups in the morning and 31 in the afternoon. How many did they drink in the evening?   3. Bill has a collection of 145 books. He donated 14 books last year and 30 books this year. How many books does he still have?   4. A school has 2 dining halls. Each dining hall has26 tables. If there are four children to each table, how many children stay for lunch?   5. Last month, Jack worked for 180 hours, Greg worked for 151 hours, and Edward worked 34 hours more than Jack. How many hours did they work altogether?