The difference between 55 and 20 is: 
The difference between 74 and 41 is: 
The difference between 52 and 20 is: 
The difference between 55 and 21 is: 
The difference between 45 and 20 is: 
The difference between 55 and 30 is: 
The difference between 63 and 28 is: 
The difference between 55 and 20 is: 