The difference between 73 and 71 is: 
The difference between 90 and 11 is: 
The difference between 72 and 71 is: 
The difference between 73 and 70 is: 
The difference between 83 and 71 is: 
The difference between 73 and 21 is: 
The difference between 80 and 78 is: 
The difference between 73 and 71 is: 