1. A board game contains 26 red coins, 28 white coins, and 12 blue coins. How many coins are there in all?   2. Mr. Gates borrowed from the library 33 books on Wednesday, 23 books on Monday, and 6 books on Thursday. How many books did he borrow altogether?   3. Mrs. Martin delivered 32 letters in June, 29 letters in October, and 25 letters in August. How many letters did she deliver in the three months?   4. For her new kitchen, Mrs. Martin 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 5 hours, Greg played for 4 hours, and Edward played 9 hours more than Greg. How many hours did they play altogether?