The difference between 84 and 37 is: 
The difference between 45 and 20 is: 
The difference between 89 and 37 is: 
The difference between 84 and 32 is: 
The difference between 64 and 37 is: 
The difference between 84 and 57 is: 
The difference between 89 and 32 is: 
The difference between 84 and 37 is: 