The difference between 32 and 24 is: 
The difference between 37 and 20 is: 
The difference between 39 and 24 is: 
The difference between 32 and 21 is: 
The difference between 32 and 24 is: 
The difference between 32 and 24 is: 
The difference between 38 and 20 is: 
The difference between 32 and 24 is: 