Q: How much is 67 minus 11? A: 
Q: How much is 90 minus 27? A: 
Q: How much is 64 minus 11? A: 
Q: How much is 67 minus 11? A: 
Q: How much is 57 minus 11? A: 
Q: How much is 67 minus 21? A: 
Q: How much is 73 minus 17? A: 
Q: How much is 67 minus 11? A: 