The difference between 70 and 15 is: 
The difference between 53 and 17 is: 
The difference between 79 and 15 is: 
The difference between 70 and 10 is: 
The difference between 70 and 15 is: 
The difference between 70 and 45 is: 
The difference between 77 and 12 is: 
The difference between 70 and 15 is: 