#mental-math on Hacker News

2 stories tagged mental-math, newest first.

Using Fibonacci numbers to convert from miles to kilometers and vice versa (catonmat.net)

332 points by thunderbong 2 years ago | 116 comments

A Catonmat blog post explaining how consecutive Fibonacci numbers can approximate conversions between miles and kilometers.

373 points by bpierre 3 years ago | 74 comments

Human Shader is a crowdsourced project where people compute shader pixels by hand with arithmetic to collectively render an image without a computer.