1. A board game contains 25 blue coins, 27 green coins, and 9 red coins. How many coins are there in all?   2. Mr. Brown borrowed from the library 8 books on Tuesday, 2 books on Wednesday, and 14 books on Thursday. How many books did he borrow altogether?   3. Mrs. Young delivered 29 letters in April, 31 letters in December, and 32 letters in May. How many letters did she deliver in the three months?   4. For her new kitchen, Mrs. Young bought a crockery set, a cutlery set and a pressure cooker. Each item cost $ 21 . How many dollars did she spend?   5. Jack played for 2 hours, Greg played for 4 hours, and Edward played 6 hours more than Greg. How many hours did they play altogether?