The difference between 40 and 36 is: 
The difference between 89 and 54 is: 
The difference between 49 and 36 is: 
The difference between 40 and 30 is: 
The difference between 50 and 36 is: 
The difference between 40 and 26 is: 
The difference between 45 and 31 is: 
The difference between 40 and 36 is: 