The difference between 65 and 50 is: 
The difference between 85 and 51 is: 
The difference between 62 and 50 is: 
The difference between 65 and 52 is: 
The difference between 65 and 50 is: 
The difference between 65 and 20 is: 
The difference between 71 and 56 is: 
The difference between 65 and 50 is: 