Master the math skills needed to calculate drug dosages safely and accurately! Math Calculations for Pharmacy Technicians, 4th Edition covers the competencies required by the American Society of Health-System Pharmacists (ASHP). Designed specifically for Pharmacy Technicians, the book includes a review of basic math, conversions between measurement systems, interpretation of drug labels and physicians' orders, and calculation of medications based on a patient's age, body weight, or body surface area. Two basic methods of calculating drug dosages are described: ratio/proportion and dimensional analysis. Simplifying calculation concepts, Elaine Beale’s practical worktext breaks down calculations, provides examples, and contains hundreds of practice problems to help you develop calculation confidence and prepare for a successful career as a Pharmacy Technician.