Q: How much is 45 minus 12? A: 
Q: How much is 54 minus 39? A: 
Q: How much is 49 minus 12? A: 
Q: How much is 45 minus 14? A: 
Q: How much is 35 minus 12? A: 
Q: How much is 45 minus 22? A: 
Q: How much is 51 minus 18? A: 
Q: How much is 45 minus 12? A: 