1.  Invitations were sent to 11 relatives for a family gettogether. Only 6 relatives came. How many relatives did not come? 
  

2.  Jack weighs 21 kg. His mother is 63 kg. How much more is his mother's weight (in kg)? 
  

3.  Mr. Hurt will be 39 next year. His son is 27 years younger than him. How many years old is his son at present? 
  

4.  A family party has 30 adults, 16 boys, and 5 girls. How many more adults are there at the party than children? 
  

5.  Gary is 12 years old. His aunt is 42. How many years older than him is his aunt? 
  
