1. Invitations were sent to 87 relatives for a family get-together. Only 85 relatives came. How many relatives did not come?   2. Brian weighs 22 kg. His mother is 59 kg. How much more is his mother's weight (in kg)?   3. Mr. Smith will be 36 next year. His son is 27 years younger than him. How many years old is his son at present?   4. A family party has 39 adults, 17 boys, and 6 girls. How many more adults are there at the party than children?   5. Adam is 13 years old. His aunt is 35. How many years older than him is his aunt?