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Rob Eastaway

Maths on the Back of an Envelope: Clever Ways to (Roughly) Calculate Anything

Maths on the Back of an Envelope: Clever Ways to (Roughly) Calculate Anything

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  • More about Maths on the Back of an Envelope: Clever Ways to (Roughly) Calculate Anything


Maths on the Back of an Envelope is a guide to solving tricky math problems using only the back of an envelope, a pencil, and brain power. It is packed with anecdotes, quizzes, and calculation tips and is an invaluable introduction to the art of estimation.

Format: Paperback / softback
Length: 208 pages
Publication date: 01 April 2021
Publisher: HarperCollins Publishers



Maths on the Back of an Envelope is a captivating book by Rob Eastaway that offers a delightful and accessible guide to playing with numbers. Authored by Hannah Fry, this book delves into intriguing questions such as the global count of cats, the likelihood of winning the lottery twice, and the time it takes to reach one million. It empowers readers to tackle challenging mathematical problems using only a back of an envelope, a pencil, and their own brainpower.

Eastaway takes an entertaining approach in this book, presenting various techniques and strategies for estimation. He shares amusing anecdotes, engaging quizzes, and practical calculation tips that apply to various situations. Maths on the Back of an Envelope serves as an invaluable introduction to the art of estimation, reminding readers that their own brains can be powerful tools when dealing with numbers.

With its engaging content, this book is suitable for individuals of all ages and mathematical abilities. Whether you're a student looking to improve your estimation skills or simply someone who enjoys puzzles and challenges, Maths on the Back of an Envelope is a must-read. It provides a fun and informative journey into the world of numbers, showcasing the power of mental arithmetic and encouraging readers to embrace their mathematical potential.

Weight: 154g
Dimension: 129 x 197 x 16 (mm)
ISBN-13: 9780008444495

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