This step-by-step guide to calculating correct medication dosages includes an introduction to basic math, exercises and quizzes for practice and self-evaluation, and web material for professors, including test banks and extra practice questions. Real-life scenarios introduce common illnesses and the medications used to treat them, enabling nurses and nursing students to practice calculating appropriate dosages. This guide is designed to increase competency in basic math skills and problem-solving techniques that require applied or conceptual mathematics, ensuing safer care for patients.