1. A board game contains 20 black coins, 7 white coins, and 22 green coins. How many coins are there in all?   2. Mr. Gates borrowed from the library 7 books on Tuesday, 14 books on Friday, and 5 books on Thursday. How many books did he borrow altogether?   3. Mrs. Simon delivered 32 letters in November, 33 letters in February, and 32 letters in July. 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 $ 20 . How many dollars did she spend?   5. Jack played for 3 hours, Greg played for 4 hours, and Edward played 5 hours more than Greg. How many hours did they play altogether?