The difference between 78 and 42 is: 
The difference between 89 and 17 is: 
The difference between 79 and 42 is: 
The difference between 78 and 47 is: 
The difference between 98 and 42 is: 
The difference between 78 and 52 is: 
The difference between 82 and 46 is: 
The difference between 78 and 42 is: 