Free-form entry eg: '125000km', '1.5 million inches', '$67bn', '45000000 AUD', 100years', '123456789', '1 trillion', '1.5e6', '25 million kg'
2 June 2016 The world’s longest cross-sea bridge HK-Zhuhai-Macao Bridge was successfully linked up.
Starting from the Lantau Island in Hong Kong, the Y-shaped bridge has a total length of about 55 km, including a 6.7 km underwater tunnel and a 23-km bridge over the sea, making it the longest cross-sea bridge in the world.
The bridge will serve as an important channel linking Hong Kong, Macao, Zhuhai and the western part of the Pearl River Delta, one of the most economically-developed areas in the Chinese mainland.
The cost of the bridge was around 1.5bn USD.
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 …
This thought-provoking blog post accurately describes one of the most important reasons for mathematical (and other) education: for the habits of thought and not always only for the content.
Numeracy, and a numerate approach to understanding the world, becomes a habit also. Keep asking: “is that a big number?”
Thanks to Andrew Steele (@statto on Twitter) for this website, which puts into context how much (little!) the UK spends on science each year. Take a look for yourself and ask “are these big numbers?”
£10.4 bn per annum: Is That A Big Number?
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