While there is no standard CV/resume that is required, make sure you get some help setting it up. I'm in the process of reviewing CV's for internship selection right now and I've come across a few that are a hot mess, information is jumbled and just randomly thrown in here and there. Yeesh.
I believe I listed mine out to two decimal places. If the application itself doesn't tell you what to do, I personally would just put whatever's listed on my transcripts. In your case, there's not likely to be any substantive difference anyway.