The difference between 64 and 63 is: 
The difference between 71 and 24 is: 
The difference between 65 and 63 is: 
The difference between 64 and 62 is: 
The difference between 94 and 63 is: 
The difference between 64 and 13 is: 
The difference between 70 and 69 is: 
The difference between 64 and 63 is: 