1. Diane bought 4 dolls. Each doll cost $ 4. How many dollars did she spend on the dolls?   2. Michelle has 7 dolls. Each doll has a red dress, a white dress, and a black dress. How many dresses are there in all?   3. Robert has 11 toy cars. How many total wheels are there on the toy cars?   4. Robert arranges 7 blocks in a tall stack. He makes 4 such stacks. How many total blocks are there in the stacks?   5. Stacy multiplied 8 by 9 on her toy calculator. What product did the calculator display?