Open in the curiosity app
Share the knowledge!

Why does 1=0.999...?

Key Facts In This Video

  1. 1 is equal to 0.999... (repeating). 00:09

  2. Writing 1 as "1" or "0.999..." is a matter of a choice of notation. 00:31

  3. If you subtract 0.999... from 1, you get a line of endless zeroes. 01:23