The difference between 66 and 49 is: 
The difference between 58 and 34 is: 
The difference between 69 and 49 is: 
The difference between 66 and 43 is: 
The difference between 86 and 49 is: 
The difference between 66 and 39 is: 
The difference between 67 and 40 is: 
The difference between 66 and 49 is: 