This book has been created for students wanting to take pharmacy registration assessment exams and become a licensed pharmacist. Calculations are often considered as the hardest part of any pharmacy orientated exam and is often the main reason for exam failure. For this reason, we have collected a team of highly skilled, pharmacy professionals to compile and refine this book to ensure it presents what you really need to know. In this book we explore the wide range of questions which can be presented during exams such as the GPhC, Naplex, PEBC, FPGEE and many more... The book not only contains questions and learning resources but also worksheet for you to practically apply the knowledge you have learnt. The key sections in this book include: The basics behind pharmacy calculations Exponents and scientific calculations Conversions Medical abbreviations Dosage Concentration Infusion Alligation Body weight and surface area Paediatric dosages Mixing liquid preparations Pharmacoeconomics