The difference between 63 and 11 is: 
The difference between 47 and 29 is: 
The difference between 66 and 11 is: 
The difference between 63 and 11 is: 
The difference between 43 and 11 is: 
The difference between 63 and 31 is: 
The difference between 71 and 19 is: 
The difference between 63 and 11 is: 