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Rounding up?

In a GCSE Maths paper when giving an answer on a question about, wages and tax%. Is it protocol to round up an answer even if it shows no mention of it in the actual question?
It depends, if my answer has more than 2 dp, then i would round up to 1 dp eg 2.68 to 2.7. However if you get an answer that has 1.dp then I would leave it, I would round it up. But it does depend what answer you get
Depends how many decimal places the answer has. If your calculator shows 12.62850572 then yes I would round (usually to 2 or 3dp) and include what you rounded to. Just put (to 2d.p or 3 s.f) next to your answer. During my exams I didn’t round to whole numbers unless asked, always 2d.p or 1d.p.

Go through a few mark schemes for your exam board and see how many decimal points they have, and use that as a guide.
Reply 3
Avatar for ScottEdden
ScottEdden
OP
11
Thanks for that. The answer was $396.85, in the mark scheme the answer was $397. as there was nothing about rounding up I wonder if I'd lose a mark for that?
Original post by ScottEdden
Thanks for that. The answer was $396.85, in the mark scheme the answer was $397. as there was nothing about rounding up I wonder if I'd lose a mark for that?


Original post by ScottEdden
Thanks for that. The answer was $396.85, in the mark scheme the answer was $397. as there was nothing about rounding up I wonder if I'd lose a mark for that?


probably not there's only like 15c difference so I'm sure they'll now that you did it right as long as you show workings out right
Reply 5
Avatar for ScottEdden
ScottEdden
OP
11
Cool, thanks👍
I used to base my D.P or Significant figures off however many there are in the numbers in the questions. Hope this helps

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