1. A board game contains 29 white coins, 3 red coins, and 30 yellow coins. How many coins are there in all?   2. Mr. Lee borrowed from the library 31 books on Tuesday, 26 books on Thursday, and 16 books on Monday. How many books did he borrow altogether?   3. Mrs. Simon delivered 32 letters in January, 25 letters in July, and 21 letters in December. How many letters did she deliver in the three months?   4. For her new kitchen, Mrs. Simon bought a crockery set, a cutlery set and a pressure cooker. Each item cost $ 24 . How many dollars did she spend?   5. Jack played for 8 hours, Greg played for 4 hours, and Edward played 9 hours more than Greg. How many hours did they play altogether?