This text emphasizes the simplicity of the dimensional analysis method to help even those students with math anxiety minimize or eliminate medication calculation errors. It begins with a comprehensive review of general math skills and an explanation of basic dimensional analysis methodology. The book focuses on the analysis and setup of practice problems, formulation of a reasonable answer, and evaluation of the answer. This one-of-a-kind text is designed for nursing students at all levels, including graduate nurses and practicing nurses who want a refresher. It is an appropriate text selection for agency in-service programs as well as for physician assistant medication math courses.