1. Barbara bought 11 dolls. Each doll cost $ 4. How many dollars did she spend on the dolls?   2. Debbie has 10 dolls. Each doll has a blue dress, a green dress, and a white dress. How many dresses are there in all?   3. Paul has 10 toy cars. How many total wheels are there on the toy cars?   4. Paul arranges 8 blocks in a tall stack. He makes 4 such stacks. How many total blocks are there in the stacks?   5. Cheryl multiplied 9 by 9 on her toy calculator. What product did the calculator display?