The pages on Further Maths were written for the course examined by AQA.
Decision 1 is very much based around mathematics in real life situations. And all of the algorithms explored in this topic are ones which are used in every day life. Because of this, it is very important that for all questions in the exam, you state which algorithm you are using, show the stages or workings which the algorithm involves, label any diagrams, and if needs be, make a key to help the examiner.