Day-to-day life is full of scenarios where your skill with numbers is tested, whether it's dividing up your share of the restaurant bill, or working out whether you've been overcharged at the checkout. So many of us try to avoid these basic sums at all costs, waiting for someone else to step in with the answer; but this book is the perfect solution! It includes chapters on: How to Check a Till Receipt Quickly; Long division; Multiplying and Dividing by 10, 100 or 1,000; Money and Percentages; Converting metres, Litres and Grams; and, Angles, Triangles and Trig. This book contains all the shortcuts, fun tricks and new approaches you need to tackle even complex calculations with confidence.