The difference between 94 and 51 is: 
The difference between 87 and 63 is: 
The difference between 95 and 51 is: 
The difference between 94 and 53 is: 
The difference between 64 and 51 is: 
The difference between 94 and 21 is: 
The difference between 102 and 59 is: 
The difference between 94 and 51 is: 