The difference between 66 and 28 is: 
The difference between 64 and 56 is: 
The difference between 69 and 28 is: 
The difference between 66 and 24 is: 
The difference between 86 and 28 is: 
The difference between 66 and 48 is: 
The difference between 68 and 20 is: 
The difference between 66 and 28 is: 