Q: What is 78 minus 42? A: 
Q: What is 32 minus 20? A: 
Q: What is 77 minus 42? A: 
Q: What is 78 minus 41? A: 
Q: What is 68 minus 42? A: 
Q: What is 78 minus 62? A: 
Q: What is 82 minus 46? A: 
Q: What is 78 minus 42? A: 