The difference between 89 and 70 is: 
The difference between 31 and 19 is: 
The difference between 82 and 70 is: 
The difference between 89 and 72 is: 
The difference between 99 and 70 is: 
The difference between 89 and 40 is: 
The difference between 90 and 71 is: 
The difference between 89 and 70 is: 