Can i be a photographer if i am bad at maths?

I have no idea how to work out crop factors. It does in my head just to look at this stuff:
http://www.dpreview.com/forums/post/51820565
Added (1). Frank - "First, it's "math" not "maths." So you may want to be equally concerned about your English skills as you are with your math skills."

First, I have an A-level English degree. Next, I AM English. In England we correctly say "maths", as it is an abbreviated form of mathematics.

Finally, if I ever need the assistance of some obnoxious, condescending loser who thinks he can teach me my own language, I will be sure to send you a PM.
Added (2). Thanks to everyone else for your answers.

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