Practice, Practice, Practice. You could make up flash cards and have a friend quiz you on common pharmacy math questions. Or you may want to purchase a book on pharmacy math. If you are currently working, maybe you could ask your supervisor or pharmacist for some help with double checking your work and maybe they could go over it with you. Maybe you could look into getting a math tutor? Maybe you have a family member who is really good at math and they could help bring you up to speed.
