1. Diane bought 8 dolls for $ 8. She had $ 61 in her purse. How many dollars are left in her purse?   2. Barbara has two dolls. The first doll is 46 cm tall and the second is 42 cm. What is the difference in their heights (in cm)?   3. Ronnie had 66 marbles in his school bag. He returned home with 57 marbles. How many marbles did he lose?   4. Ronnie arranges 12 blocks in a tall stack. Accidentally, he drops 3 blocks. How many blocks are still there in the stack?   5. Each day 73 cars are made in a toy factory. Of these, 2 are defective. How many toy vehicles are not defective?