The difference between 47 and 21 is: 
The difference between 42 and 41 is: 
The difference between 48 and 21 is: 
The difference between 47 and 26 is: 
The difference between 87 and 21 is: 
The difference between 47 and 31 is: 
The difference between 55 and 29 is: 
The difference between 47 and 21 is: 