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Maths on the Back of an Envelope
- Clever ways to (roughly) calculate anything
- Narrated by: Rob Eastaway
- Length: 3 hrs and 36 mins
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Publisher's Summary
How many cats are there in the world?
What's the chance of winning the lottery twice?
And just how long does it take to count to a million?
Learn how to tackle tricky maths problems with nothing but the back of an envelope, a pencil and some good old-fashioned brain power.
Join Rob Eastaway as he takes an entertaining look at how to figure without a calculator. Packed with amusing anecdotes, quizzes, and handy calculation tips for every situation, Maths on the Back of an Envelope is an invaluable introduction to the art of estimation and a welcome reminder that sometimes our own brain is the best tool we have to deal with numbers.
PLEASE NOTE: When you purchase this title, the accompanying reference material will be available in your Library section along with the audio on our desktop site.
Critic Reviews
"A delightfully accessible guide to how to play with numbers." (Hannah Fry, author of Hello World and The Mathematics of Love)
"Put aside those calculators and computers, and find a pen and piece of paper! In a collection of riveting tips and examples, Eastaway shows us amazing short-cuts to get rough answers to important questions. I still find it remarkable that 16% of 25 is exactly the same as 25% of 16!" (Professor David Spiegelhalter, author of The Art of Statistics)
"Another terrific book by Rob Eastaway." (Simon Singh)
What listeners say about Maths on the Back of an Envelope
Average Customer RatingsReviews - Please select the tabs below to change the source of reviews.
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- alazhar
- 12-02-2020
Expect to find clever ways? Expect away!
Unless you're terrible in arithmetic or simple calculations, then this books is probably not for you. Having said that, there are a few estimating tricks I personally benefited from.
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