Watch and track your favorite playlist.
Curated by: Mathemaniac (96 videos)
Next video (explanation): https://www.youtube.com/watch?v=08NwwsllQxw If you don't have a calculator (for example in math competitions), how do you calculate square root 2? Panic? Or go through this in your head: 1.4 square is 1.96, just slightly below 2; so let's try 1.41 squared, lower than 2, but 1.42, oh larger, then square root 2 must start off with 1.41... Watch the video to see three different ways that help you nail it! Useful links: (1) "Long Division" https://nrich.maths.org/5955 (2) Continued fraction https://en.wikipedia.org/wiki/Pell_number#Approximation_to_the_square_root_of_two https://en.wikipedia.org/wiki/Continued_fraction#Infinite_continued_fractions_and_convergents (3) Babylonian's method https://mathlesstraveled.com/2009/05/18/square-roots-with-pencil-and-paper-the-babylonian-method/ Other than commenting on the video, you are very welcome to fill in a Google form linked below, which helps me make better videos by catering for your math levels: https://forms.gle/QJ29hocF9uQAyZyH6 If you want to know why these methods work, stay tuned for the next video! SUBSCRIBE and see you in the next video! #mathemaniac #math #squareroots #babylonian #nocalculator