DeLoreanDude wrote:
ViatorRose, I never knew that, thanks... Me feels better
That's why it's important to show all your working and how you arrived at your answer.
Lots of the marks are for showing clearly the correct steps for working out a problem.
Don't forget the units and state clearly if you've rounded numbers.
Draw diagrams too if it helps.
Annotate the geometry diagram that you're given (if you're permitted).
Showing your working helps you figure out the problem too.
I've always shown my working: I'm not a living calculator!
The only time when you can't show your working is during mental arithmetic batteries.
Mental arithmetic is something that most people could probably train for: it's a question of knowing the right "short-cut" techniques.
Sorry, but I've found that these little things have helped me get better marks in Maths.