The difference between 90 and 40 is: 
The difference between 97 and 35 is: 
The difference between 95 and 40 is: 
The difference between 90 and 40 is: 
The difference between 50 and 40 is: 
The difference between 90 and 30 is: 
The difference between 90 and 48 is: 
The difference between 90 and 40 is: 