Rounding to 1 significant figure. (How to round to 1 sf).m2ts

Here you will shown how to round any number off to 1 significant figure. This means 1 non zero digit from the start of the number. In the first example you are told to round 827 to 1 significant figure. This means you round the number either to 800 or 900. The number after the 8 is 2 so this means it's closer to 800. 1 significant figure can be shortened to 1 sig fig or 1 s.f