Q: What is 79 minus 66? A: 
Q: What is 77 minus 37? A: 
Q: What is 78 minus 66? A: 
Q: What is 79 minus 66? A: 
Q: What is 89 minus 66? A: 
Q: What is 79 minus 46? A: 
Q: What is 80 minus 67? A: 
Q: What is 79 minus 66? A: 