The difference between 66 and 47 is: 
The difference between 99 and 68 is: 
The difference between 69 and 47 is: 
The difference between 66 and 43 is: 
The difference between 56 and 47 is: 
The difference between 66 and 17 is: 
The difference between 69 and 40 is: 
The difference between 66 and 47 is: 