The difference between 87 and 38 is: 
The difference between 70 and 40 is: 
The difference between 89 and 38 is: 
The difference between 87 and 30 is: 
The difference between 87 and 38 is: 
The difference between 87 and 78 is: 
The difference between 89 and 30 is: 
The difference between 87 and 38 is: 