Free-form entry eg: '125000km', '1.5 million inches', '$67bn', '45000000 AUD', 100years', '123456789', '1 trillion', '1.5e6', '25 million kg'

A little workout for the number sense. It’s never easy to have an intuitive sense of volumes, but here’s a little thought experiment to exercise your numeracy chops.

Answer: around 600 million. Check my workings!

Is That a Big Number is now a book, published by Oxford University Press. (Google ISBN 0198821220 to find many online booksellers). Although there is serious purpose behind the book - to explore how we think about numbers and how we can understand big numbers - it’s written in a light and engaging style.

Entertaining, full of practical examples, and memorable concepts, Is That A Big Number? renews our relationship with numeracy. If numbers are the musical notes with which the symphony of the universe is written, and you’re struggling to hear the tune, then this is the book to get you humming again.

$267 billion in tariffs. Is That a Big Number?

Misplaced decimal point endangers lives

Violent Crime Rate in the USA: 50% down from peak 25 years ago

Making Sense of Air Pollution Statistics

2,043,599 Pennies is a big number but is it Art?

How old are Olympians? (for each sport)

GDP: a Predictor of Olympic Gold?

Guide to Spotting Dodgy Statistics

HK-Zhuhai-Macao Bridge Meets in the Middle

200 Terabyte Mathematical Proof

The Greek Theatre in the Sicilian town of Taormina could, so they say, accommodate 5000 theatre-goers. Could this be true? Let’s do some rough and ready calculations …

http://www.andrewcaelliott.com/explorations/2016/11/13/a-trip-to-the-theatre

Yes, there's now an engaging, informative book based on these numbers. Oxford University Press: July 2018.

Click here to learn more about it.

Click here for Podcast: Andrew Elliott interviewed for New Books Network.