Q: How much is 47 minus 13? A: 
Q: How much is 81 minus 77? A: 
Q: How much is 44 minus 13? A: 
Q: How much is 47 minus 13? A: 
Q: How much is 37 minus 13? A: 
Q: How much is 47 minus 33? A: 
Q: How much is 50 minus 16? A: 
Q: How much is 47 minus 13? A: 