Pharmacy technicians serve critical roles on the healthcare team, and dependency on accurate calculations is paramount to ensure medication safety and effectiveness and optimal patient outcomes. The second edition has been restructured to focus on the most important pharmacy calculation concepts -- covering the fundamentals related to the accuracy and basic math operations, units of measurement and conversions, critical thinking in problem solving, dosing calculations, percentages, concentration calculations, compounding formulas, intravenous infusion calculations, and business math.