The difference between 51 and 22 is: 
The difference between 76 and 54 is: 
The difference between 56 and 22 is: 
The difference between 51 and 20 is: 
The difference between 31 and 22 is: 
The difference between 51 and 42 is: 
The difference between 59 and 20 is: 
The difference between 51 and 22 is: 