1. Michelle bought 7 dolls. Each doll cost $ 25. How many dollars did she spend on the dolls?   2. Barbara has 23 dolls. Each doll has a red dress, a blackdress, and a white dress. How many dresses are there in all?   3. Robert has 39 toy cars. How many total wheels are there on the toy cars?   4. Brian arranges 19 blocks in a tall stack. He makes 7 such stacks. How many total blocks are there in the stacks?   5. Stacy multiplied 50 by 7 on her toy calculator. What product did the calculator display?