Covering the ratio and proportion and formula methods, this comprehensive textbook presents a straightforward, real-world approach to the mathematical calculations used in the clinical setting. It features a unique, step-by-step process that teaches you to identify the information needed to perform a calculation, determine if information is missing, set up and perform the calculation, and check the answer to ensure accurracy. This systematic approach is designed to reduce human calculation errors and ensure patient safety. Common medications and methods of administration are used throughout the textbook, with more than 1,200 practice problems to help you master the math needed for clinical practice.