Q: How much is 54 minus 42? A: 
Q: How much is 86 minus 81? A: 
Q: How much is 54 minus 42? A: 
Q: How much is 54 minus 42? A: 
Q: How much is 74 minus 42? A: 
Q: How much is 54 minus 22? A: 
Q: How much is 61 minus 49? A: 
Q: How much is 54 minus 42? A: 