1. Invitations were sent to 41 relatives for a family get-together. Only 33 relatives came. How many relatives did not come?   2. Gary weighs 22 kg. His mother is 55 kg. How much more is his mother's weight (in kg)?   3. Mr. Lee will be 38 next year. His son is 27 years younger than him. How many years old is his son at present?   4. A family party has 41 adults, 19 boys, and 3 girls. How many more adults are there at the party than children?   5. Ronald is 16 years old. His aunt is 38. How many years older than him is his aunt?