The difference between 35 and 20 is: 
The difference between 99 and 45 is: 
The difference between 37 and 20 is: 
The difference between 35 and 22 is: 
The difference between 85 and 20 is: 
The difference between 35 and 10 is: 
The difference between 42 and 27 is: 
The difference between 35 and 20 is: 