The difference between 80 and 45 is: 
The difference between 47 and 37 is: 
The difference between 87 and 45 is: 
The difference between 80 and 40 is: 
The difference between 50 and 45 is: 
The difference between 80 and 15 is: 
The difference between 87 and 42 is: 
The difference between 80 and 45 is: 