1. Barbara bought 4 dolls for $ 4. She had $ 43 in her purse. How many dollars are left in her purse?   2. Debbie has two dolls. The first doll is 59 cm tall and the second is 53 cm. What is the difference in their heights (in cm)?   3. Gary had 96 marbles in his school bag. He returned home with 89 marbles. How many marbles did he lose?   4. Gary arranges 10 blocks in a tall stack. Accidentally, he drops 8 blocks. How many blocks are still there in the stack?   5. Each day 60 buses are made in a toy factory. Of these, 3 are defective. How many toy vehicles are not defective?