I recently learned an interesting fact about Fibonacci numbers while watching a random number theory video on YouTube. Fibonacci numbers can be used to approximately convert from miles to kilometers and back. Here is how. Take two consecutive Fibonacci numbers, for example 5 and 8. And you're done c...
I've always multiplied by 5/8 or 8/5. While multiplication sure isn't as easy as addition I think it's easier to remember one fraction than a sequence of integers. If you've already got them down, sure I guess.