Q: How much is 87 minus 70? A: 
Q: How much is 86 minus 38? A: 
Q: How much is 82 minus 70? A: 
Q: How much is 87 minus 75? A: 
Q: How much is 97 minus 70? A: 
Q: How much is 87 minus 30? A: 
Q: How much is 95 minus 78? A: 
Q: How much is 87 minus 70? A: 