Q: What is 87 minus 40? A: 
Q: What is 66 minus 20? A: 
Q: What is 86 minus 40? A: 
Q: What is 87 minus 46? A: 
Q: What is 97 minus 40? A: 
Q: What is 87 minus 50? A: 
Q: What is 95 minus 48? A: 
Q: What is 87 minus 40? A: 