A Level Math RevisionExam tip poster: Round only at the end (Edexcel A Level Maths)
A4 portrait. It is drawn in vector form, so it also prints sharply scaled up to A3.
The poster
The maths
A common mistake the examiners point out: Premature rounding and truncating. What to do instead: Store calculator values in memory, round only at the end, and round (don't chop). Re-read the accuracy the question asks for.