Everyone learned to calculate in school. However, experiences from everyday nursing practice and teaching show that the level of knowledge varies greatly. Often, a thorough and time-consuming refresher is necessary. This book specifically refreshes the basic arithmetic operations (from addition to proportions and percentage calculations to solving equations) through short and concise explanations. The second part contains a variety of tasks from the field of specialized calculations for nursing professions. Sample solutions are provided, and practice exercises offer the opportunity for self-study. The third part on wage and salary calculation is kept brief and aims to summarize only the fundamental elements amidst the diversity of tariffs, encouraging everyone to delve deeper into the applicable regulations.