1. Cheryl bought 7 dolls. Each doll cost $ 15. How many dollars did she spend on the dolls?   2. Debbie has 16 dolls. Each doll has a white dress, a blackdress, and a green dress. How many dresses are there in all?   3. Brian has 37 toy cars. How many total wheels are there on the toy cars?   4. Robin arranges 21 blocks in a tall stack. He makes 6 such stacks. How many total blocks are there in the stacks?   5. Barbara multiplied 42 by 9 on her toy calculator. What product did the calculator display?