The difference between 63 and 12 is: 
The difference between 89 and 78 is: 
The difference between 63 and 12 is: 
The difference between 63 and 10 is: 
The difference between 63 and 12 is: 
The difference between 63 and 32 is: 
The difference between 70 and 19 is: 
The difference between 63 and 12 is: 