1. A board game contains 22 green coins, 20 red coins, and 29 blue coins. How many coins are there in all?   2. Mr. Jackson borrowed from the library 27 books on Saturday, 32 books on Friday, and 31 books on Thursday. How many books did he borrow altogether?   3. Mrs. Allen delivered 24 letters in September, 33 letters in August, and 31 letters in April. How many letters did she deliver in the three months?   4. For her new kitchen, Mrs. Allen bought a crockery set, a cutlery set and a pressure cooker. Each item cost $ 27 . How many dollars did she spend?   5. Jack played for 8 hours, Greg played for 4 hours, and Edward played 3 hours more than Greg. How many hours did they play altogether?