1.  Dianebought two dolls for $ 68 . She had $15 in her purse. How many dollars are left in her purse?   2. Barbara  has two dolls. The first doll is 58 cm tall and the second is 33 cm. What is the difference in their heights (in cm)?   3. Arthurwent to play in the garden with 61 marbles. He returned home with 32 marbles. How many marbles did he lose?   4. Mark arranges 76  blocks in a tall stack. Accidentally, he drops34 blocks. How many blocks are still there in the stack?   5. Each day  791 cars are made in a toy factory. Of these, 99 are defective. How many toy vehicles are not defective?