1. Invitations were sent to 78 relatives for a family get-together. Only 68 relatives came. How many relatives did not come?   2.  There are five members in Steve's family. Their total weight is 275 kg. His own weight is 46 kg. How many kilograms do the other four members weigh?   3. Mr. Baker will be 59 next year. His son is 28 years younger than him. How many years old is his son at present?   4. A family party has 134 adults, 22 boys, and 25 girls. How many more adults are there at the party than children?   5. For Christmas, Mr. Jackson gave $88 to his two sons. He gave $51 to the elder son. How many dollars did he give the younger son?