Q: How much is 78 minus 28? A: 
Q: How much is 65 minus 43? A: 
Q: How much is 79 minus 28? A: 
Q: How much is 78 minus 20? A: 
Q: How much is 68 minus 28? A: 
Q: How much is 78 minus 38? A: 
Q: How much is 72 minus 24? A: 
Q: How much is 78 minus 28? A: 