1.  Stacybought two dolls for $ 44 . She had $11 in her purse. How many dollars are left in her purse?   2. Cheryl  has two dolls. The first doll is 64 cm tall and the second is 32 cm. What is the difference in their heights (in cm)?   3. Garywent to play in the garden with 83 marbles. He returned home with 11 marbles. How many marbles did he lose?   4. Ronald arranges 80  blocks in a tall stack. Accidentally, he drops50 blocks. How many blocks are still there in the stack?   5. Each day  737 buses are made in a toy factory. Of these, 49 are defective. How many toy vehicles are not defective?