Surely it's just coincidence that I blogged about Sarah Palin on October 1st and my StatCounter shows I got a blog visit from someone in Wasilla, AK - supposedly as a result of a search for the words: do I spell out the age 12?
Y'know, if you're from Wasilla, Alaska, you're welcome here. You can even get here by searching for "Sarah Palin," "candidates," "vice presidential debates," "first amendment," "politics" - gosh, lots of things. You don't have to pretend to be looking for the answer to "do I spell out the age 12?"
In case you didn't get the answer to your question, though: Yes. Spell out numbers under 100.