I’ve put this together after years of working with IGCSE maths students across Cambridge and Edexcel. I’ve seen every type of student, the ones who panic, the ones who over-prepare the wrong things, the ones who barely revise and somehow pull it off, and the ones who put in real focused work and genuinely surprise themselves on results day. So your IGCSE math exam is coming up, and you’re not quite sure where to start. Maybe you’ve been putting off revision for a while. Maybe you’ve already started, but nothing feels like it’s sticking. Or maybe you’re doing okay but want to push from a B to an A or from an A to that elusive A*.
Whatever stage you’re at right now, this guide is going to help.
What separates the A* students from everyone else isn’t talent. It’s mostly method. And that’s something you can fix.
Let’s go through everything, the topics, the past papers, the grade boundaries, the common traps, and a realistic revision plan you can actually follow.
First Things First: Which IGCSE Maths Exam Are You Sitting?
This might sound like a weird place to start, but you’d be surprised how many students revise from the wrong syllabus.
There are two main versions of IGCSE Maths: Cambridge IGCSE Maths and Edexcel IGCSE Maths. They cover similar ground, but the paper structure is different, the question style feels different, and some topics appear on one but not the other. Revising the wrong one is a real waste of time.
Ask your school if you’re not 100% sure. Once you know, download the official specification document from the exam board’s website. This is your master list of every topic that could appear on your paper. Keep it somewhere easy to find throughout your IGCSE maths revision.
Cambridge IGCSE Maths (Syllabus 0580)
Cambridge splits students into Core and Extended tiers.
If you’re going for an A or A*, you’ll be sitting Extended. This involves two papers Paper 2 (short questions, no calculator) and Paper 4 (longer structured questions, calculator allowed). The total is usually around 4 hours of exam time split across both sittings.
Cambridge questions have a particular feel to them. They often set maths in real-world situations, working out the cost of building materials, interpreting a graph about population growth, calculating distances from a map. The maths itself isn’t always harder, but the reading comprehension required catches people out. Misreading one word in a Cambridge question can cost you the entire mark allocation for that part.
Edexcel IGCSE Maths (Specification 4MA1)
Edexcel also has Foundation and Higher tiers. For grade 7 and above, you’ll be doing the Higher tier, two papers, one non-calculator and one calculator.
The question style here is a bit more direct than Cambridge. You’ll still get multi-step problems, but Edexcel tends to lay things out a little more plainly. That said, the harder questions at the end of each paper are genuinely difficult, on’t be fooled into thinking it’s easy just because the early questions are straightforward.
Quick tip: Once you know your exam board, find 2,3 recent past papers and just flip through them. Don’t answer anything yet. Just look at how the questions are laid out, what they look like, how long each question is. Familiarity with the format is underrated.
IGCSE Maths Topics You Need to Actually Know
Here’s the truth about IGCSE maths topics, most students think they’ve covered everything when they haven’t. They’ve been taught everything in class, but being taught something and actually knowing it well enough to use it under exam pressure are two very different things.
Below is a breakdown of the core areas. As you read through, mark anything that makes you feel even slightly unsure. That’s your revision list.
Number
Number sits underneath almost everything else in IGCSE maths. Get it wrong here and you’ll make errors across every other topic too.
The key things to be confident on: standard form (writing and calculating with numbers in the form a × 10ⁿ), percentages, including reverse percentages and compound interest, prime factorisation, HCF and LCM, and working with fractions without a calculator.
Surds come up on the Extended and Higher papers and they trip up a lot of students. Simplifying surds, rationalising a denominator, these aren’t difficult once you’ve practised them a few times, but you need to have actually done that practice.
Reverse percentages are probably the most commonly dropped marks in the Number section. If something costs £68 after a 15% discount, working backwards to find the original price, that’s what catches people. Make sure you can do this confidently.
Algebra
Algebra is where exams are won and lost at the higher grades. If you want an A or A* in IGCSE maths, you need to be solid across all of this.
Expanding double brackets, factorising quadratics, completing the square, using the quadratic formula, these are non-negotiable. Quadratics appear on basically every paper, sometimes directly and sometimes buried inside a geometry or word problem.
Simultaneous equations come up in various forms. You need to know how to solve them by elimination and by substitution. The harder version on Extended papers involves one linear and one quadratic equation, that one takes some practice.
Algebraic fractions are another area where students drop marks. Adding or subtracting expressions like 3/(x+2) + 1/(x-3), the method is straightforward once you know it, but it’s easy to make sign errors.
Sequences are often underrevised. For Cambridge IGCSE maths especially, you might be asked to find the nth term of a quadratic sequence, not just a linear one. Know the method.
Functions, f(x), composite functions like fg(x), and inverse functions, appear on the Extended/Higher papers. A lot of students skip these because they seem abstract. Don’t. They’re usually only worth 3,5 marks, but those are marks you can reliably pick up with a bit of targeted revision.
Geometry and Mensuration
Geometry questions tend to carry high mark allocations, which makes them worth spending real time on during your IGCSE maths revision.
The basics, angles in parallel lines, interior and exterior angles of polygons, congruence and similarity, you should know these comfortably. Where students start dropping marks is on the more involved topics.
Circle theorems are one of the biggest opportunities in the whole paper. There are about eight or nine of them, and they come up every single year. If you know all of them, you’re looking at an easy 6–8 marks. If you half-know them, you’ll get some right and some wrong, and you’ll waste time being unsure. Learn all of them properly, with the diagram for each one.
Trigonometry: basic SOHCAHTOA for right-angled triangles, then sine rule and cosine rule for non-right-angled triangles. Know which one to use when, that’s usually the part students struggle with. If you’re given two sides and the angle between them, that’s the cosine rule. If you have an angle and its opposite side plus one more piece of information, that’s the sine rule.
3D problems involving Pythagoras and trig are worth paying attention to. They look complicated but they almost always break down into two separate 2D triangles solved one after the other.
Vectors appear on Cambridge Extended papers in particular. They can be worth 8–10 marks and students often avoid them. If you put in two or three hours on vectors, you could turn what was previously a blank answer into almost full marks.
Statistics and Probability
Students often underrevise this section because it seems “easier” than algebra or geometry. It’s not. It’s just different.
Histograms are a classic trap. The y-axis shows frequency density, not frequency. If you draw a histogram with frequency on the y-axis, you’ll get it wrong even if your heights look reasonable. The formula is frequency density = frequency ÷ class width. Burn that into your memory.
Cumulative frequency graphs and box plots, know how to draw them and read them. The median comes from the middle of the cumulative frequency, not the middle of the x-axis. The interquartile range is Q3 minus Q1. These come up every year.
Probability tree diagrams are usually straightforward marks if you set them out neatly and multiply along branches, then add between branches. The harder versions involve conditional probability (where the second probability changes based on the first outcome), make sure you’ve practised these.
Venn diagrams have become more prominent in recent IGCSE maths papers. Get comfortable with the notation, P(A ∪ B), P(A ∩ B), P(A’), and how to fill in a Venn diagram from written information.
Coordinate Geometry and Graphs
Straight-line graphs: gradient, y-intercept, equation of a line, parallel and perpendicular lines. Most students are fine with y = mx + c. Where they lose marks is on perpendicular gradients (negative reciprocal) and finding the equation of a line when given two points.
Curve sketching and interpreting, quadratic, cubic, and reciprocal curves. You need to know their general shapes and be able to use a graph to solve equations graphically.
Graph transformations (f(x+a), f(x)+a, f(ax), af(x)) appear on Extended/Higher papers. They’re often only 3,4 marks, but students skip them because they’re not sure of the rules. Learn the four transformations and a few examples each.
How to Actually Plan Your IGCSE Maths Revision
Here is where I want to be direct with you, because most revision advice is too vague to be useful.
Reading your notes is not revision for maths. Watching a video and thinking “oh yeah, I remember that” is not revision. Revision for maths means sitting with a blank piece of paper and solving problems without looking anything up.
If you can’t do that yet, you’re not revising, you’re familiarising. Both have their place, but don’t confuse them.
Step 1: Do a Diagnostic Test Right Now
If you haven’t already, sit a full past paper today. Timed. No notes. Use your actual exam calculator.
Then mark it with the mark scheme. Be honest, don’t give yourself marks you didn’t earn.
Write down every topic where you lost marks. That list is your revision priority list, not what you think your weaknesses are.
Step 2: Revise Topic by Topic, Not Paper by Paper
Early in your revision, focus on one topic at a time. Take algebra. Spend two or three days on it, go through your notes, watch a video on anything you’re unclear about, then do 20–30 questions just on that topic.
Mixing topics too early slows you down because you’re constantly switching context. Block your time.
Step 3: Do Practice Questions, Not Just Examples
There’s a big difference between looking at a worked example and doing questions yourself. Do the questions first. If you get stuck, look at the method, then close it and try again from scratch.
This is slower than reading through examples, but it’s how the knowledge actually gets into your head.
Step 4: Move to Past Papers After 4–5 Topics
Once you’ve covered the main areas, say, algebra, geometry, number, and statistics,start doing timed past papers. Don’t wait until you’ve finished every single topic. The exam will contain questions on everything, and practicing while you’re still revising helps you see how topics connect.
The Right Way to Use IGCSE Maths Past Papers
Past papers are the most valuable revision tool available to IGCSE maths students. But most students use them wrong.
Wrong way: sit the paper, mark it, note the score, feel good or bad, move on.
Right way: sit the paper, mark it carefully, and then spend twice as long going through every question you got wrong. For each mistake, identify exactly what went wrong, wrong method, misread question, arithmetic slip, forgot a formula, then go back to that topic and do more questions on it.
The paper itself is not the revision. The analysis afterwards is the revision.
How Many Past Papers Should You Do?
Aim for at least 8 full past papers before your exam. More if you can manage it.
Save the two most recent years for the final week, you want those to be as close to exam conditions as possible, without having seen them before.
Where to Find Them
For Cambridge IGCSE maths past papers: PapaCambridge has a comprehensive archive going back many years. The Cambridge website also has the most recent papers with mark schemes.
For Edexcel IGCSE maths past papers: Physics & Maths Tutor has a well-organised collection with mark schemes and examiner reports. The examiner reports are especially useful, they show you exactly what students got wrong on each question, which is very honest feedback.
Understanding IGCSE Maths Grade Boundaries
Grade boundaries confuse students more than they should. Here’s how they actually work.
After every exam, the exam board looks at how students performed across the country. They then set the minimum mark needed for each grade based on that performance. If the paper was harder than usual, the boundaries will be lower. If it was an easier paper, they’ll be higher.
This means you cannot know the exact boundary before you sit the exam. And honestly, trying to aim for a specific mark is the wrong approach anyway, it leads to students doing the easy questions slowly and carefully but then running out of time on the harder ones.
What the boundaries typically look like for Cambridge IGCSE Extended maths: an A* usually requires somewhere around 70% or above on most papers, but this varies. Some years it’s lower if the paper was difficult. An A is usually around 55–65%. But again, these shift.
The practical takeaway: forget the boundaries. Focus on picking up marks across all sections, not just the ones you’re comfortable with. The students who do well on the boundary aren’t the ones who perfectly targeted a specific mark, they’re the ones who covered the syllabus properly and didn’t leave large gaps.
The Mistakes That Actually Cost Students Grades
I’ve looked at a lot of marked papers over the years. These are the patterns that come up again and again.
Not writing down working: This is the single biggest one. If you do calculations in your head or on a side scrap of paper and only write the final answer, you will lose marks whenever you get something wrong, even if your method was correct. Write every step, clearly. The mark scheme awards marks for method, not just for the final answer.
Rounding too early: This is a maths exam, and accuracy marks matter. If you round a value partway through a calculation, your final answer drifts away from the correct one. Keep full values in your calculator until the very last step.
Getting the histogram y-axis wrong: Frequency density, not frequency. I’ve already said this once, and I’m saying it again because it costs people marks every year.
Misidentifying which circle theorem to use: This comes from half-knowing the theorems. If you know them fully, including what the diagram looks like, you won’t confuse them. If you only vaguely remember the rules, you’ll second-guess yourself and pick the wrong one.
Leaving questions blank: Even if you don’t know the full method, write something. A correct formula. A diagram. The first step. Partial marks are real, examiner reports consistently show that a chunk of students who left certain questions blank would have earned 1–2 marks just by writing down a relevant formula or starting value.
Forgetting units. Area is cm² or m². Volume is cm³ or m³. Speed is km/h or m/s. These are free marks if you remember, and free losses if you don’t.
Practical IGCSE Maths Tips for the Final Stretch
These are not generic. These are things that actually make a difference in the weeks and days before your exam.
Use the mark scheme to understand, not just to mark. When you look at the mark scheme after a past paper, don’t just check if you got things right. Read what the mark scheme says carefully. Sometimes you’ll see a different method that’s faster or cleaner than what you used. Learn it.
Learn your formulas properly. Yes, some formula sheets are provided. But relying on them slows you down and adds mental load during the exam. Know your area and volume formulas, your trigonometric identities, and your algebraic rules without having to look them up. The formula sheet is a safety net, not a crutch.
Practice non-calculator arithmetic. Paper 2 (Cambridge) and Paper 1 (Edexcel) are non-calculator. Students who haven’t practised manual arithmetic will make silly errors and lose time. In the weeks before your exam, do some calculation practice without a calculator, long multiplication, dividing decimals, working out percentages by hand.
Do harder questions, not just comfortable ones. This sounds obvious but it’s human nature to practice what you’re already good at. Force yourself to sit with questions that feel difficult. The last 20,25% of questions on any IGCSE maths paper are where the A and A* marks are. If you never practice at that difficulty level, you’ll walk into the exam unprepared for that section.
Get your calculator sorted. Know how to use your specific calculator model for things like finding powers, roots, trigonometric values, and working with fractions. Some students use a new or borrowed calculator in the exam and don’t know where the functions are. That’s avoidable.
An 8-Week IGCSE Maths Revision Schedule
Here’s a structure that works. This assumes you’re putting in around 1 to 1.5 hours of genuine maths revision per day. It’s not designed to burn you out, it’s designed to build momentum over time.
Week 1: Start with a diagnostic past paper. Mark it honestly. List every topic where marks were dropped. Use the second half of the week to start on Number, standard form, percentages, surds, HCF/LCM.
Week 2: Algebra. Quadratics (factorising, formula, completing the square), simultaneous equations, sequences, algebraic fractions, functions. This is a big week because algebra underpins everything.
Week 3: Geometry. Angles, Pythagoras, trigonometry (right-angled and non-right-angled), similarity and congruence.
Week 4: Circle theorems, mensuration (area and volume of all standard shapes), vectors.
Week 5: Statistics and probability. Histograms, cumulative frequency, box plots, tree diagrams, Venn diagrams.
Week 6: Coordinate geometry, graphs and graph transformations, real-life graphs, function graphs.
Week 7: Mixed past papers. Do one full paper every two days. Analyse each one properly. Spend the remaining time on whichever topics keep showing up in your mistakes.
Week 8: Final two or three papers under strict exam conditions. Formula review. Light revision on your two or three weakest remaining areas. No new topics.
Adjust this based on what your diagnostic paper showed. If algebra is already strong, you don’t need a full week there, use that time on whatever needs it more.
The Week Before Your IGCSE Maths Exam
Do not try to cram everything in this week. The time for learning new topics has passed. This week is about consolidation, confidence, and practical preparation.
Three to four days before: Do one past paper per day under real exam conditions. Sit at a desk. Time yourself properly. Then review each paper and focus only on the few remaining weak spots. Don’t revise things you’ve already got under control.
Two days before: Formula review. Write out every formula you need to know from memory. Check it against your notes. Anything you blanked on, do a few practice questions on that topic only.
Day before: Keep it short. An hour maximum. Skim through your notes on your two weakest topics. Do 5–10 practice questions. Then stop. Sort out your equipment, pencils, pens, ruler, protractor, compass, approved calculator with working batteries. Check your timetable for the exact time and room.
Morning of the exam: Eat breakfast. Leave early enough that you’re not rushing. Don’t open a textbook at the exam centre, it’ll just make you more anxious. Trust what you’ve put in over the last eight weeks.
Resources Worth Using for IGCSE Maths Revision
Not all resources are equal. Here are the ones that are genuinely useful:
For past papers: PapaCambridge for Cambridge IGCSE maths past papers, Physics & Maths Tutor for Edexcel IGCSE maths past papers. Both are free and well organised by year and paper number.
For video explanations: Corbettmaths is excellent for clear, no-nonsense explanations of every topic. Dr Frost Maths has a more comprehensive question bank if you want to drill specific question types. ExamSolutions is particularly good for the harder topics like vectors and algebraic proof.
For topic-by-topic drilling: Dr Frost Maths lets you filter by topic and difficulty. If you’ve identified that histograms or circle theorems are a weak spot, you can go directly to those questions without needing a full paper.
For revision books: CGP produce well-regarded revision guides for both Cambridge IGCSE maths and Edexcel IGCSE maths. They’re clear, affordable, and follow the specification closely. Good to have alongside your past paper practice.
Examiner reports: These are downloadable from the exam board websites and are one of the most underused resources in IGCSE maths revision. They’re written by the people who mark the papers, and they describe exactly what students got wrong on each question. Reading a few of these will teach you more about how to approach exam questions than almost anything else.
Should You Get a Tutor for IGCSE Maths?
It depends on where you’re at and what you need.
If you’re stuck on specific topics that aren’t clicking no matter how many videos you watch, a few targeted sessions with a good tutor can shift things quickly. A tutor who knows Cambridge IGCSE maths or Edexcel IGCSE maths well can often spot exactly where your thinking is going wrong in a way that a video or textbook can’t.
If you’re hovering between grades, say, consistently scoring in the B range and wanting to reach an A, a tutor who focuses on exam technique and the harder question types can make a real difference.
What to look for: someone who knows your specific exam board, who works with past papers in their sessions, and who can explain not just what the answer is but why your approach was wrong. If a tutor just does questions alongside you without pushing you to work independently, that’s not going to help you in an exam room on your own.
That said, plenty of students reach A and A* without a tutor. If you’re putting in genuine focused revision with past papers and proper analysis, self-study absolutely works.
