The difference between 56 and 20 is: 
The difference between 66 and 22 is: 
The difference between 54 and 20 is: 
The difference between 56 and 20 is: 
The difference between 86 and 20 is: 
The difference between 56 and 30 is: 
The difference between 65 and 29 is: 
The difference between 56 and 20 is: 