1. Diane bought 4 dolls. Each doll cost $ 21. How many dollars did she spend on the dolls?   2. Michelle has 19 dolls. Each doll has a green dress, a bluedress, and a yellow dress. How many dresses are there in all?   3. Brian has 42 toy cars. How many total wheels are there on the toy cars?   4. Graham arranges 33 blocks in a tall stack. He makes 6 such stacks. How many total blocks are there in the stacks?   5. Debbie multiplied 42 by 5 on her toy calculator. What product did the calculator display?