The difference between 90 and 13 is: 
The difference between 58 and 28 is: 
The difference between 95 and 13 is: 
The difference between 90 and 10 is: 
The difference between 50 and 13 is: 
The difference between 90 and 73 is: 
The difference between 99 and 12 is: 
The difference between 90 and 13 is: 