Q: How much is 70 minus 15? A: 
Q: How much is 60 minus 23? A: 
Q: How much is 77 minus 15? A: 
Q: How much is 70 minus 10? A: 
Q: How much is 50 minus 15? A: 
Q: How much is 70 minus 15? A: 
Q: How much is 76 minus 11? A: 
Q: How much is 70 minus 15? A: 