1. A board game contains 52 redcoins, 74 black coins, and 44 white coins. How many coins are there in all?   2. Young has a small library at home. He has161 books on History, 117 books on Geography, and 91 books on Science. How many books does he have altogether?   3. Mrs.Brown delivered 229 letters in September, 329 letters in August, and 261 letters inOctober. How many letters did she deliver in the three months?   4. For her new kitchen, Mrs Gates bought a crockery set, a cutlery set and a pressure cooker. Each item cost $ 47 . How many dollars did she spend?   5. Last month, Jack worked for 165 hours, Greg worked for 132 hours, and Edward worked 22 hours more than Greg. How many hours did they work altogether?