1.  There are 20 cakes. Each cake is cut into 6 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 247 cups of tea yesterday. They drank 91 cups in the morning and 100 in the afternoon. How many did they drink in the evening? 
  

3.  Darren has a collection of 186 books. He donated 10 books last year and 27 books this year. How many books does he still have? 
  

4.  A school has 2 dining halls. Each dining hall has31 tables. If there are four children to each table, how many children stay for lunch? 
  

5.  Last month, Jack worked for 166 hours, Greg worked for 123 hours, and Edward worked 31 hours more than Jack. How many hours did they work altogether? 
  
