The difference between 64 and 61 is: 
The difference between 85 and 29 is: 
The difference between 62 and 61 is: 
The difference between 64 and 63 is: 
The difference between 94 and 61 is: 
The difference between 64 and 41 is: 
The difference between 72 and 69 is: 
The difference between 64 and 61 is: 