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