IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Math => Topic started by: ivrytwr3 on April 02, 2010, 11:57:52 am

Title: Really bone question - sorry!
Post by: ivrytwr3 on April 02, 2010, 11:57:52 am

OK, i'm a back to school adult and after a weeks intense course am about to sit IGCSE Math exams.  But, i have a really simple question i hope somoene can answer:

When the exam paper states "Give the answer to 3 significant figures, or if degrees, to one decimal place" - does this mean:

a.  Each part of your working out is rounded

or

b.  The overall answer is rounded?

Sorry  :-[

Title: Re: Really bone question - sorry!
Post by: T.Q on April 02, 2010, 12:04:23 pm

only the final answer

Title: Re: Really bone question - sorry!
Post by: Amr Fouad on April 02, 2010, 12:32:38 pm

NEVER Round your working..if you do you will lose accuracey in your final answer..in your working round to AT LEAST 5 s.f...

than do as T.Q said..

Title: Re: Really bone question - sorry!
Post by: The Golden Girl =D on April 06, 2010, 08:28:21 pm

Quote from: Amr Fouad on April 02, 2010, 12:32:38 pm

NEVER Round your working..if you do you will lose accuracey in your final answer..in your working round to AT LEAST 5 s.f...

than do as T.Q said..

i agree with both of u

Title: Re: Really bone question - sorry!
Post by: garima06 on October 29, 2010, 07:59:01 pm

never round in middle of the question. u will get the final answer wrong..alwayz round the final answer!  :)

Title: Re: Really bone question - sorry!
Post by: Arthur Bon Zavi on October 31, 2010, 11:10:26 am

Quote from: garima06 on October 29, 2010, 07:59:01 pm

never round in middle of the question. u will get the final answer wrong..alwayz round the final answer!  :)

That's better!  ;D