Q: What is 90 minus 64? A: 
Q: What is 13 minus 12? A: 
Q: What is 99 minus 64? A: 
Q: What is 90 minus 60? A: 
Q: What is 80 minus 64? A: 
Q: What is 90 minus 54? A: 
Q: What is 98 minus 62? A: 
Q: What is 90 minus 64? A: 