1. Cheryl bought 6 dolls. Each doll cost $ 4. How many dollars did she spend on the dolls?   2. Barbara has 2 dolls. Each doll has a yellow dress, a blue dress, and a black 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 10 blocks in a tall stack. He makes 4 such stacks. How many total blocks are there in the stacks?   5. Debbie multiplied 6 by 9 on her toy calculator. What product did the calculator display?