The difference between 66 and 18 is: 
The difference between 58 and 25 is: 
The difference between 69 and 18 is: 
The difference between 66 and 14 is: 
The difference between 66 and 18 is: 
The difference between 66 and 58 is: 
The difference between 68 and 10 is: 
The difference between 66 and 18 is: 