Eastaway, Rob
Maths on the Back of an Envelope: Clever ways to (roughly) calculate anything
- ISBN 13:
- 9780008444495
- author:
- Eastaway, Rob
- format:
- Paperback / softback
- publisher:
- HarperCollins Publishers Ltd
- language:
- English
- Publication Year:
- 2021
- Pages:
- 208
- Dimensions:
- 19.8 x 12.9 x 1.4 centimeters (0
- Genre:
- Science, Mathematics, Arithmetic,
- Condition:
- New
- Availability:
- Item usually sent within 10 working days
Description
Doing mathematics without a calculator seems like an unnecessary feat in the twenty-first century. These clever little electronic devices have helped to take away the drudgery of arithmetic, and given all of us the power to perform in a few seconds what might previously have taken hours to work out. But much of the time, we don't need the exact answer with its endless decimal points - we just need to know whether something is in the right ballpark.
Rob Eastaway's book offers a timely and welcome reminder that sometimes our own brain is the best tool we have to deal with numbers. Packed with amusing anecdotes and handy back-of-the-envelope calculations for every situation, this book is a practical guide to making maths work for you, not against you.
From spotting misleading statistics in the news and bad deals, to estimating how long you'll be standing in that slowly crawling queue, this book provides clever mathematical techniques to help you navigate everyday life with confidence.
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