The difference between 71 and 28 is: 
The difference between 69 and 25 is: 
The difference between 79 and 28 is: 
The difference between 71 and 20 is: 
The difference between 41 and 28 is: 
The difference between 71 and 68 is: 
The difference between 75 and 22 is: 
The difference between 71 and 28 is: 