IGCSE Math RevisionExam tip poster: And then: multiply (IGCSE Maths 0580)
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: Combined events: adding where you should multiply. What to do instead: For A and then B (independent) multiply. Add only to combine different outcomes that cannot both happen. A tree diagram makes each route clear.