1. A board game contains 14 blue coins, 30 green coins, and 10 white coins. How many coins are there in all?   2. Mr. Jackson borrowed from the library 12 books on Monday, 32 books on Friday, and 23 books on Saturday. How many books did he borrow altogether?   3. Mrs. Anderson delivered 20 letters in December, 27 letters in July, and 31 letters in January. How many letters did she deliver in the three months?   4. For her new kitchen, Mrs. Anderson bought a crockery set, a cutlery set and a pressure cooker. Each item cost $ 31 . How many dollars did she spend?   5. Jack played for 9 hours, Greg played for 9 hours, and Edward played 6 hours more than Greg. How many hours did they play altogether?