9000 round off to one significant figure

Question

9000 round off to one significant figure

Answer 1

Hi -

 

Although "9000" appears to have one significant figure (the 9), I should warn you that

• The significance of trailing zeros in a number not containing a decimal point can be ambiguous.

 

I have taken this statement from

 

   http://en.wikipedia.org/wiki/Significant_figures#Identifying_significant_figures

 

If we wanted to express it to 4 significant figures, we could add a trailing decimal point -- 9000. But in the absence of the decimal, there is no simple way to make obvious how many significant figures there are. Please read the wiki page!

 

Best wishes.

Answer 2

Already is rounded off