1. Debbie bought 10 dolls. Each doll cost $ 4. How many dollars did she spend on the dolls?   2. Cheryl has 6 dolls. Each doll has a white dress, a yellow dress, and a green dress. How many dresses are there in all?   3. Brian has 6 toy cars. How many total wheels are there on the toy cars?   4. Brian arranges 11 blocks in a tall stack. He makes 4 such stacks. How many total blocks are there in the stacks?   5. Sarah multiplied 11 by 9 on her toy calculator. What product did the calculator display?