Maths on the Back of an Envelope : Clever ways to (roughly) calculate anything

byRob Eastaway

(Rating By Good Reads)  
Rs. 499 275 save

Only 0 left in stock

Binding: Paperback

Condition: New

Delivery within 6-8 business days

icon
Gently Used

New

icon
Authentic

Ships In
1-2 Days

Quality check

Original Books

Bookmark

Free Bookmarks

Does that statistic make sense? How much will this round of drinks come to? And what are the chances of winning the lottery? Twice? Learn how to do complex maths with nothing but the back of an envelope, a pencil and some good old-fashioned brain power. 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 clever mathematical techniques do exactly that, as he takes an entertaining look at how to figure without a calculator. 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 is packed with amusing anecdotes and handy back-of-the-envelope calculations for every situation. Most importantly, this book is a timely and welcome reminder that sometimes our own brain is the best tool we have to deal with numbers.

Author - Rob Eastaway

Publisher - HARPERCOLLINS

Binding - Paperback

Language - English

Pages - 208

Condition - New

ISBN: 9780008389031

Add for more to achieve free shipping.

Free Shipping

Congrats! You are eligible for free delivery!

Mystery Boxes by Kitabay

  • Available in 3 Sizes
  • Over 8 Different Genres
  • Up to 80% discount
  • 100% Original Books
  • Includes Free Bookmarks
  • Free Doorstep Delivery

Starting at ₹1199 for 10 Books

Shop Now
Image

Not Just Books

We have Merch too!

At Kitabay, we're more than just a book store - we also offer a range of merchandise for book lovers! Our collection includes bookmarks, tote bags, cozy blankets, elegant mugs, and other fun accessories. Our book-inspired merchandise is designed to make your reading experience even more enjoyable and comfortable, and also makes for great gifts for the bookworms in your life.

| |
56%
 
29%
 
29%
 
29%
 
 
 
 

Frequently Asked Questions

We hand-pick 10 books from our vast library that match your preferred genre and package them into a personalised Mystery Box. Each box is distinct, ensuring that every reader experiences a delightful surprise when they open it.

Given the mystery box concept, we're unable to disclose the book titles. Rest assured, these books are thoughtfully chosen to provide you with the most enjoyable reading experience possible.

Feel free to specify any books or authors you'd like to exclude in the comment box above the "Buy Now" button. We'll ensure that those books or authors are not included in your selection.

If you have particular titles or authors in mind, you have the option to purchase individual books directly from the website.

When purchasing multiple Mystery Boxes, you can be confident that none of the books received in each box will be repeated.

If you're making another purchase, simply share a photo of the books you received along with the order number on WhatsApp at 7742473777, and we'll make a record of it.

We strictly have a no piracy policy and guarantee that each book you receive will be original.

We ship all orders within two business days and ensure they reach you within a week.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)