The difference between 87 and 54 is: 
The difference between 66 and 42 is: 
The difference between 88 and 54 is: 
The difference between 87 and 56 is: 
The difference between 67 and 54 is: 
The difference between 87 and 14 is: 
The difference between 90 and 57 is: 
The difference between 87 and 54 is: 