Let's do some basic math problems!

Maybe this is a side-effect of playing those silly "Math Blaster" games when I was growing up, but I've found this to be pretty entertaining.
On the strikeout: math is fun, and being handed problems you know how to solve is also fun.  How long has it been since you did long division in your head?  This isn't teaching me anything new, but it makes my mind feel more limber.