The difference between 38 and 30 is: 
The difference between 19 and 17 is: 
The difference between 35 and 30 is: 
The difference between 38 and 31 is: 
The difference between 78 and 30 is: 
The difference between 38 and 10 is: 
The difference between 45 and 37 is: 
The difference between 38 and 30 is: 