I am a first-year student nurse and this book is only the second I have purchased. As part of one of our modules we have do a numeracy test, the questions of which are similar to those in this book. Now that I have read the book and actually enjoyed completing the exercises I am confident that I can successfully complete the numeracy test and the further calculations tests we have to do in subsequent years. It doesn't just tell you what's right, it shows you (through worked calculations) HOW it's right - buy it now and you will never be fazed by decimals, mg/mcg and fractions again!