How accurate should my Community Service Hours and membership for academic clubs be for UC schools?

So I am currently applying to UCI, UCR, and UCSD and right before Thanksgiving Break I forgot to ask for my Service Hours from my teachers, and I also forgot to get a copy from the teacher who is in charge of NHS and CSF. If I make an approximate of this info on my UC application, do I risk jeopardizing my chances for admission?

Approximations are fine…in fact for most people that’s the best they can do since most don’t keep records of their hours.

The approximation should be close enough that if someone checks, you aren’t going to be sweating about it. A reasonable estimate is fine.