Q: How much is 63 minus 20? A: 
Q: How much is 39 minus 10? A: 
Q: How much is 69 minus 20? A: 
Q: How much is 63 minus 20? A: 
Q: How much is 63 minus 20? A: 
Q: How much is 63 minus 10? A: 
Q: How much is 70 minus 27? A: 
Q: How much is 63 minus 20? A: 