The difference between 70 and 13 is: 
The difference between 56 and 48 is: 
The difference between 79 and 13 is: 
The difference between 70 and 10 is: 
The difference between 20 and 13 is: 
The difference between 70 and 33 is: 
The difference between 79 and 12 is: 
The difference between 70 and 13 is: 