Studying for Entrance

Hi all! I am currently studying to take my entrance exam for Watts! I can honestly say I'm a little overwhelmed. I tend to be excellent at English and Science, but Math makes me super nervous!! Is there anyone else that struggles with Math? Am I going to be at a HUGE disadvantage? Will I be ok if I know the basics? I don't plan to quit before I'm ahead... but I can't help but be nervous. Any suggestions?? Thanks!!