The difference between 51 and 15 is: 
The difference between 60 and 32 is: 
The difference between 58 and 15 is: 
The difference between 51 and 10 is: 
The difference between 31 and 15 is: 
The difference between 51 and 35 is: 
The difference between 56 and 10 is: 
The difference between 51 and 15 is: 