Probability: Tree Diagrams

A free tree diagrams worksheet for GCSE and iGCSE Maths, covering the Probability content at both Foundation and Higher tier. It works through a probability tree, multiply along, add between and the ‘at least one’ shortcut. Questions are grouped into fluency, reasoning and problem solving, so you build the technique first and then apply it to the kind of unfamiliar, multi-step questions that separate grades in the exam. Written to match the style and presentation of Edexcel iGCSE 4MA1 and the other major GCSE boards. Full step-by-step solutions are provided in a separate PDF, so you can check your method as well as your answer.