1.  Sarah bought 3 dolls for $ 3. She had $ 41 in her purse. How many dollars are left in her purse? 
  

2.  Debbie has two dolls. The first doll is 18 cm tall and the second is 11 cm. What is the difference in their heights (in cm)? 
  

3.  Steve had 36 marbles in his school bag. He returned home with 28 marbles. How many marbles did he lose? 
  

4.  Steve arranges 7 blocks in a tall stack. Accidentally, he drops 4 blocks. How many blocks are still there in the stack? 
  

5.  Each day 38 trucks are made in a toy factory. Of these, 3 are defective. How many toy vehicles are not defective? 
  
