Overview
Securing an A* in Cambridge International A-Level Mathematics is less about discovering new mathematical genius and more about mastering the art of scoring marks. It is a grade awarded for precision, consistency, and flawless technique under exam pressure across your chosen papers, whether that's Pure Mathematics 1 (P1), Mechanics (M1) and Statistics 1 (S1), or the A-level route with P3 and S2. The difference between an A and an A* is not what you know; it's the handful of marks you avoid losing on questions you can already do.
Master the Mark Scheme's Language
For Cambridge Cambridge past paper revision, every mark in a 9709 paper is categorised. A B1 mark is an independent mark for a correct statement. An M1 is a method mark, awarded for attempting a valid process. An A1 is an accuracy mark, which you can only get if the preceding method mark has been awarded. Understanding this is crucial: you can earn an M1 for correctly substituting values into the quadratic formula even if your arithmetic is wrong, but you cannot get the subsequent A1 for the correct answer without that M1. Internalising this structure, detailed in our guide to [9709 marking](/subjects/9709), allows you to secure partial credit and build your score methodically.
Eliminate Careless Errors Systematically
For Cambridge Cambridge past paper revision, the top candidates are not immune to mistakes, but they have trained themselves to minimise them. The A* is often lost to avoidable errors: sign mistakes in algebra, calculator mode errors (degrees vs. radians), misreading 'at least' for 'at most', or failing to give an answer to the required significant figures. Keep a 'mistake log'. Every time you lose a mark in practice, write down the error and why it happened. Your log should be brutally honest: 'Forgot to square the radius in A=πr²', 'Used degrees in a radians question', 'Copied a number down wrong from the previous line'. This process makes you conscious of your personal error patterns and is the first step to eliminating them.
Cover Every Syllabus Point
You cannot hide a weak topic and hope for the best. Examiners are tasked with sampling the entire syllabus, and it is common for a single paper to draw on a very wide range of topics. An A* candidate must be confident in every area of their chosen components, whether it's P1/M1/S1 or the full A-level with P3. Use the official syllabus as your ultimate checklist. Go through it point by point and be honest about your confidence level. Use targeted resources like our [free 9709 course](/courses/9709) to turn weak areas into strong ones long before the exam.
Treat Past Papers as Your Training Ground
There is no substitute for doing full, timed past papers. This is the single most effective activity you can undertake. It builds the mental stamina needed to concentrate for the full duration of the exam, familiarises you with the precise wording and style of questions, and exposes your weaknesses under pressure. Start with recent years and work backwards. You can find a complete library of [9709 past papers](/past-papers/9709) on our site. Simulate exam conditions: no phone, no notes, and a strict timer. This is not just about revision; it is specific, targeted training for the final event.
Mark Your Own Work Brutally
Doing a past paper is only half the job. You must mark it immediately and rigorously against the official mark scheme. Use a different coloured pen and be your own harshest critic. For every single mark you lost, write a short note explaining why. Was it a knowledge gap? A careless slip? Did you misread the command word? This diagnostic step is what separates passive practice from active improvement. Learning to [mark a paper](/mark) like an examiner teaches you to think like one, and you will start seeing exactly where M1 and A1 marks are won and lost.
Manage the Clock Relentlessly
Finishing the paper is a prerequisite for a top grade; you cannot get marks for questions you don't attempt. Timed past paper practice is the best way to develop an internal clock for how long you should spend on a question. A rough guide is about one minute per mark, but be flexible. If you are flying through a question, great. If you are completely stuck after a minute or two of thought, circle it and move on. Bank the easier marks across the paper first, then return to the harder questions at the end if you have time. Never let one difficult 7-mark question stop you from answering three easier 5-mark questions later in the paper.
Frequently asked questions
This section covers Frequently asked questions — ranked by what Cambridge examiners return to most often in past papers.
How many past papers should I do?
Focus on quality over quantity. It is far better to complete ten papers, mark them meticulously, analyse every error, and truly learn from them than it is to rush through thirty papers without reflection. Start with the most recent five years as they best reflect current exam styles, then use older papers for targeted practice on specific topics you find difficult.
Is it better to focus on Pure Maths or the applied papers?
An A* is calculated from your total uniform mark across all components, so you cannot afford to neglect any of them. A weakness in Mechanics or Statistics puts immense pressure on your Pure Maths score, and vice versa. Aim for a consistently high performance across the board. A balanced revision plan that gives adequate time to P1/P3, M1, and S1/S2 is essential.
What if I get completely stuck on a question?
Don't panic and do not let it derail your exam. First, write down any relevant formulae or initial steps to secure potential B1 or M1 marks. If you are still stuck after a minute, make a clear mark next to the question and move on. Your brain may solve it in the background, and you can return later with a fresh perspective after securing easier marks elsewhere.
I understand all the content but my grade isn't an A*. Why?
This is the most common frustration for high-achieving students. The issue is almost certainly exam technique, not mathematical knowledge. You are losing marks to small but costly errors: arithmetic slips, not showing sufficient working for a method mark, or misinterpreting a subtle detail in the question. The only cure is disciplined, timed practice and brutally honest self-marking to identify and eliminate these habits.