The difference between 81 and 74 is: 
The difference between 26 and 13 is: 
The difference between 85 and 74 is: 
The difference between 81 and 70 is: 
The difference between 81 and 74 is: 
The difference between 81 and 24 is: 
The difference between 88 and 71 is: 
The difference between 81 and 74 is: 