The difference between 70 and 57 is: 
The difference between 28 and 15 is: 
The difference between 78 and 57 is: 
The difference between 70 and 50 is: 
The difference between 60 and 57 is: 
The difference between 70 and 17 is: 
The difference between 73 and 50 is: 
The difference between 70 and 57 is: 