I Used to Know That: Maths
Usually shipped within 24 hours
UK deliveries from £4.95
Delivery & Returns
Delivery & Returns
We use the Royal Mail, DHL Express or UPS for our customers. For UK addresses, deliveries under 10kg are a standard £4.95 via Royal Mail Tracked 48 Service. For orders over 10kg and overseas customers, postage is calculated for you at checkout once you have entered your postal address. This price, does not include any potential custom charges that may apply, depending on the product or destination, as every country has very different import duties / taxes. Online exclusive products (such as trainers) will be delivered to you directly from the printer, separate from other items in your order, but your postage fee covers ALL items in your order.
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Description
Description
By Chris Waring
Paperback
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. It can be used a practical guide to turn to when an answer is eluding you, from helping a child with homework to calculating change or understanding statistics.
I Used to Know That: Maths is a fun and accessible way to re-visit all those useful tips and maths tricks that you have forgotten from your school days.