The difference between 70 and 39 is: 
The difference between 85 and 62 is: 
The difference between 79 and 39 is: 
The difference between 70 and 30 is: 
The difference between 70 and 39 is: 
The difference between 70 and 39 is: 
The difference between 71 and 30 is: 
The difference between 70 and 39 is: 