Are you a HS senior now?
If so, it would be a good idea to calculate your three UC GPAs here: GPA Calculator for the University of California – RogerHub
If you are a HS senior applying this year, be aware that the EA deadline for UMD is very strict. All materials, including official SAT score, transcripts, and teacher recommendations, must be received by the Nov 1 deadline, so apply ASAP and keep a close eye on the portal to confirm receipt.