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Numeracy skills are a high priority in education and practice. There is an increasing number of medication errors in the UK and, while many of these errors are of no consequence, a significant number are serious, and a few prove fatal. Many of these errors result from inaccuracies in dosage calculation. This practical, entertaining book is a complete and clear guide to calculating drug dosages. The text covers basic maths (fractions, decimals, ratios, proportions and percentages), measurement systems and practical calculations. There is vital information on recording drug administration, routes of administration, and reading drug labels, and preventing errors associated with each of these. The text promotes awareness of all of these issues through the use of realistic examples and self-test questions throughout. Additional chapters cover paediatric, obstetric and critical care dosage calculations. This text is for all degree and diploma nursing students who are mastering numeracy skills to ensure safe practice, and qualified nurses doing post-registration numeracy courses.