[dazed&confused]

Hi all,

I'm doing OCR AS Physics.

If I do a calculation and get a decimal answer of 14.5485, I'm a bit confused how to round this to, say, 3 SF.

My maths teacher says I should round it down to 14.5, but my Physics teacher rounds from the right, which would make it 14.6 (because the 8 takes the 4 up to 5, which rounds up to 14.6)

Any ideas? Which one's right?

Thanks!

Ryan

[mf2004]

I've always been told 14.5 and it's the only one that makes sense.

[EMPStudent]

(Original post by mf2004)
I've always been told 14.5 and it's the only one that makes sense.

This.

Basic rule of mathematics.

0.0485 < 0.0500

Must be over 5 to round up, less than 5 you do not.

[dazed&confused]

that's what I thought.

Great, thanks.

Ryan

[EMPStudent]

(Original post by dazed&confused)
that's what I thought.

Great, thanks.

Ryan

You're welcome Good luck in your exams!