Michael, what a great idea!  I really like the fact that I can say these drills out loud and my fifth grade students will be able to use mental math to solve the problems.  It will help them stay sharp with their basic addition, multiplication, subtraction, and division facts.  I can see using this the first 5 minutes of math as a attention/interest grabber.  I think it will also be handy for lining students up and for the wait time before students are able to go into the lunchroom and/or into their special activity for the day.  Great thinking.  I also will be able to create my own questions, like the one you so generously donated. 

Thanks,

Dawn Sommers