1.  Stacy bought 7 dolls for $ 7. She had $ 55 in her purse. How many dollars are left in her purse? 
  

2.  Sarah has two dolls. The first doll is 90 cm tall and the second is 88 cm. What is the difference in their heights (in cm)? 
  

3.  Peter had 33 marbles in his school bag. He returned home with 26 marbles. How many marbles did he lose? 
  

4.  Peter arranges 11 blocks in a tall stack. Accidentally, he drops 6 blocks. How many blocks are still there in the stack? 
  

5.  Each day 49 cars are made in a toy factory. Of these, 4 are defective. How many toy vehicles are not defective? 
  
