$0.02
I was on the interview comittee and looked at log books.
If you have any numbers that don't add up, make a note. This tells them that you are aware of it, and not just sloppy. An explanation that you are aware of it and can't remedy the discrepency is OK, unless the error is very large (5 hrs +, depending on total time).
I always appreciated an exhaustive breakdown of the numbers--NOT on a resume, but on a seperate sheet. Resumes give rough numbers, breakedown sheets lays it out for me, answers questions, and shows effort and transparency.