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