1.  There are 3 cakes. Each cake is cut into 10 parts. Each part is further cut into 2 pieces. How many cake pieces are there in all? 
  

2.  There are 4 balloons in a bag. There are 5 bags in one box. How many balloons are there in 3 boxes? 
  

3.  Everyday Robert exercises 3 minutes in the morning and 6 minutes in the evening. How many minutes does he exercise in 7 days? 
  

4.  A school has 3 dining halls. Each dining hall has8 tables. If there are four children to each table, how many children stay for lunch? 
  

5.  There are 4 paintings on each of three walls of a room. If an art gallery has 5 such rooms, how many paintings are there in its collection? 
  
