Horizons1

Hey there, i graduated with an undergrad degree in Civil Engineering 2 years ago and have been gaining experience on the job since then. I need to take the new cbt fe exam in a few weeks. Ive been studying alot but the one area i have issues with is the proper unit conversions for problems. Where can i go to learn and better myself on this issue? I dont want to get to the test and get problems wrong because i dont properly convert my units for the correct answer. Thanks! Any advice would be appreciated