1. A board game contains 31 red coins, 20 blue coins, and 33 yellow coins. How many coins are there in all?   2. Mr. Moore borrowed from the library 14 books on Wednesday, 8 books on Thursday, and 19 books on Friday. How many books did he borrow altogether?   3. Mrs. Baker delivered 33 letters in February, 29 letters in May, and 27 letters in June. How many letters did she deliver in the three months?   4. For her new kitchen, Mrs. Baker bought a crockery set, a cutlery set and a pressure cooker. Each item cost $ 33 . How many dollars did she spend?   5. Jack played for 4 hours, Greg played for 9 hours, and Edward played 7 hours more than Greg. How many hours did they play altogether?