Q: How much is 75 minus 68? A: 
Q: How much is 63 minus 45? A: 
Q: How much is 79 minus 68? A: 
Q: How much is 75 minus 63? A: 
Q: How much is 85 minus 68? A: 
Q: How much is 75 minus 28? A: 
Q: How much is 79 minus 62? A: 
Q: How much is 75 minus 68? A: 