About the Book: I Used to Know That Maths:Stuff You Forgot From School
If memories of learning algebra bring you out in a cold sweat and thoughts of
quadratic equations cause you feelings of fear and dread, I Used to Know That:
Maths can help. A light-hearted and informative reminder of the things that we
learnt in school but have since become relegated to the backs of our minds, this
book will help you to brush up on your mental arithmetic, including percentages,
averages and recurring decimals or work on your trigonometry skills, from
Pythagoras theorem to triangle areas and angles. A practical guide to turn