I often see students asking about frame rates on blogs and forums. "What frame rate should I use when doing my student animation?" That sort of thing.
My new job is the first commercial one I've had working at 30 frames per second, and it has reminded me that it just doesn't really matter. You see your goal when learning to animate is not to remember how many frames it takes to do this or that, that's going to limit your vocabulary as an animator big time. And if it was really useful then the net would be full of long lists that dictate how many frames (at different frame rates) it takes to animate all the possible actions you might ever have to animate. Boy howdy, wouldn't that take the fun out of things, and make for some very predictable animation.
The skill you should be working on is your critical eye. Have a stab at the timing, knowing from the outset that you are unlikely nail it first go, then watch it and ask yourself how well it matches the idea you had in your mind. Critique it! Then set out to make the changes needed to get it working. Making animation is a process, not an event.
Why would you listen to the mathematician in your head, when timing is an opportunity to listen to the artist inside. Who cares about the frame rate, just make it good! Easy HA! ;)