The difference between 67 and 28 is: 
The difference between 97 and 16 is: 
The difference between 69 and 28 is: 
The difference between 67 and 24 is: 
The difference between 37 and 28 is: 
The difference between 67 and 18 is: 
The difference between 69 and 20 is: 
The difference between 67 and 28 is: 