Learn how to make accurate drug calculations and administer medications safely! Calculate with Confidence, 9th Edition, makes it easy to understand the three major methods of dosage calculation - ratio and proportion, formula, and dimensional analysis. Clear, step-by-step instructions guide you through accurate calculation and safe administration of drug dosages. Thousands of practice problems ensure that you gain proficiency, patient safety is prioritized, and an emphasis on clinical judgment helps you prevent medication errors. Next-Generation NCLEX^® (NGN) Exam-style case studies help you improve clinical judgment skills. With this popular text from trusted educator Deborah C. Morris, you will learn to calculate drug dosages and administer medications with confidence and a high degree of patient safety!