How to Revise for IGCSE Maths: A Complete Exam Preparation Guide

Most students open a 600 page textbook and start at chapter 1. That is the wrong move. Your IGCSE Maths revision should begin with the official syllabus document (CIE 0580 or Edexcel 4MA1) printed on paper, with a pen in your hand.

The syllabus is a list of every learning objective the examiner can test. If you can put a tick next to each line and say *I can do this in under two minutes without looking it up*, you are ready. If you cannot, that line is your revision target. This is much more efficient than re reading chapters you already half know.

How to use the syllabus as a checklist.

Print the syllabus. For each bullet, write one of three symbols: a green tick if you are confident, an amber dot if you can do it with hints, a red cross if you cannot start. Then spend 80 percent of your revision time on the red and amber items. Ignore the green ones until the final two weeks.

For example, the CIE 0580 Extended syllabus has a line on solving quadratic equations by formula. If that is amber for you, your task is clear: practice $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$ on twenty different past paper questions until it becomes mechanical. No textbook reading, just doing.

If you are unsure which board you sit, our guide on CIE 0580 vs Edexcel 4MA1 explains the differences and where to find the right syllabus PDF.

A good IGCSE Maths revision plan is not a colourful spreadsheet. It is a small, realistic, weekly cycle that you can actually follow when you have school, sports and homework on top.

The 4 + 1 weekly pattern.

Four short sessions of focused revision (45 to 60 minutes each) on weekdays, plus one longer session of 90 to 120 minutes on the weekend. Total: about 5 hours per week per subject in the three months before the exam. That is enough if it is spent the right way.

Each session has only three blocks:

• Warm up (10 minutes): four or five short non calculator questions to wake your brain (fractions, percentages, basic algebra).
• Main work (30 to 40 minutes): one syllabus topic from your red or amber list, mixing theory recall with at least six past paper questions.
• Cool down (5 minutes): write a one line note in a *mistakes book* explaining what you got wrong and the rule that fixes it.

The last block is the one most students skip. It is also the one that creates real progress, because revising your own mistakes is the cheapest way to gain marks. For a fully worked three month version of this plan, see our IGCSE Maths revision plan: 3 months.

Avoid the marathon trap.

A six hour Saturday session feels productive but is the worst possible use of your time. Memory consolidation happens in sleep cycles, and you cannot consolidate what you crammed in one day. Spread the same six hours across five days and your retention roughly doubles.

You cannot revise IGCSE Maths without past papers. Reading worked examples is comfortable, but exam marks come from doing questions under realistic conditions and then auditing your work against the mark scheme.

The right way to do a past paper.

First time through a paper, give yourself the full official time (1 hour 30 minutes for CIE Paper 2, 2 hours 30 minutes for Paper 4 Extended). Sit at a clean desk, use the right calculator, no phone in the room. Mark it yourself the next day using the official mark scheme. Then write each lost mark into your mistakes book with the syllabus topic and the type of error (concept, calculation, misread).

Three rounds, not one.

Plan to do every recent paper at least three times across your revision period. Round one tells you where you stand. Round two, four weeks later, shows whether you have actually learned the topic or just memorised the answer. Round three, in the final fortnight, builds exam stamina and pacing.

Worked example: pacing on Paper 4.

Paper 4 Extended is worth 130 marks in 150 minutes. That is roughly $\frac{150}{130} \approx 1.15$ minutes per mark. A 6 mark question should take about 7 minutes maximum. If you have been on a question for double that, leave a clear blank, move on, come back at the end. Students lose more marks by getting stuck than by getting things wrong.

For a complete framework, including how to choose papers and how to interpret mark schemes, read our deep dives on how to use IGCSE Maths past papers and mark schemes explained.

Not all topics are equal. Some appear on almost every paper and carry many marks. Others appear once every two years for 3 marks. A smart revision plan weighs topics by their expected mark contribution.

The IGCSE Maths Extended top six.

Across the last ten years of CIE 0580 papers, these six topic clusters account for roughly 60 percent of total marks: algebra (linear, quadratic, simultaneous), number (fractions, percentages, ratio, standard form), geometry and trigonometry, mensuration, statistics and probability, transformations and vectors. If you are weak in two or more of these, that is where your revision time goes first.

Worked example: simultaneous equations.

A classic 5 mark question:

Solve $3x + 2y = 12$ and $x - y = 1$.

Step 1, from the second equation: $x = y + 1$.

Step 2, substitute into the first: $3(y + 1) + 2y = 12$.

Step 3, expand: $3y + 3 + 2y = 12$, so $5y = 9$ and $y = \frac{9}{5} = 1.8$.

Step 4, back substitute: $x = 1.8 + 1 = 2.8$.

Step 5, check: $3(2.8) + 2(1.8) = 8.4 + 3.6 = 12$. Correct.

Notice that the mark scheme gives method marks for setting up the substitution, even if you slip in arithmetic. Always write each step on its own line: that is how you protect your method marks when the final answer is wrong.

Worked example: trigonometry with the sine rule.

In a triangle, given side $a = 7$ cm opposite angle $A = 40°$, and angle $B = 65°$, find side $b$. Use $\frac{a}{\sin A} = \frac{b}{\sin B}$, so $b = \frac{7 \sin 65°}{\sin 40°} \approx \frac{7 \times 0.9063}{0.6428} \approx 9.87$ cm. Set the calculator to degrees, write the formula before the numbers, give the final answer to 3 significant figures unless the question says otherwise.

For a structured list of where students lose the most marks, see our guide on the hardest IGCSE Maths topics.

IGCSE Maths splits its assessment into a non calculator paper (CIE Paper 2 or Edexcel Paper 1) and a calculator paper (CIE Paper 4 or Edexcel Paper 2). They reward different skills, and your revision must reflect that.

Non calculator paper.

This rewards fluency with fractions, mental arithmetic, standard form, surds, and clean algebraic manipulation. If you reach for the calculator in your head every time you see $\frac{2}{3} + \frac{1}{4}$, you will run out of time. Practice the basics until they are automatic: common fractions to decimals, squares to 15, cubes to 5, square roots of perfect squares, exact values of $\sin 30°$, $\cos 60°$, $\tan 45°$.

For instance, $\frac{2}{3} + \frac{1}{4} = \frac{8}{12} + \frac{3}{12} = \frac{11}{12}$. You should produce this in under 15 seconds, in pen, with no scribbles. That comes from repetition, not from understanding.

Calculator paper.

This rewards calculator literacy. Know your model. Practise entering long expressions in one line without losing brackets. The standard mistake is computing $\sqrt{b^2 - 4ac}$ as $\sqrt{b^2} - 4ac$ because you forgot the bracket. Force yourself to write the full LaTeX style expression on paper first, then transcribe it carefully into the calculator.

Calculator choice.

For CIE, the Casio fx 991 series (EX or CW) is the standard professional choice and is allowed. For Edexcel international, the same family works. Buy it three months before the exam and use it for every single homework and past paper. The exam is not the time to learn where the fraction button lives.

For a focused breakdown, see our notes on the calculator paper and on Paper 2 vs Paper 4.

In the last three weeks before your IGCSE Maths exam, your job is no longer learning new content. It is consolidation, exam rehearsal and recovery.

Week minus 3.

Two full past papers per week under real conditions, marked the next day. Re read your mistakes book front to back. Drill any remaining red items from your syllabus checklist. Stop introducing new techniques: if a topic is still red now, target the marks you can grab, not the perfect solution.

Week minus 2.

Three past papers, alternating Paper 2 and Paper 4. Spend a session studying grade boundaries: knowing that an A star on CIE 0580 historically needs around 80 percent in the Extended tier changes how you allocate effort. See IGCSE Maths grade boundaries explained for the real numbers.

Week minus 1.

Stop after Wednesday. The last two days before the exam are for sleep, light review of your mistakes book, and a final 30 minute timed exercise to keep your hand warm. Cramming on the eve of an exam reliably costs more marks than it gains, because tired brains fail to retrieve what they already know.

The night before.

Pack your bag (calculator, spare calculator, two pens, pencil, ruler, eraser, water, ID). Re read your one page formula summary. Sleep eight hours. The exam is a performance, and like any performance it punishes a poor warm up.

For a precise day by day countdown, follow our IGCSE Maths last month exam checklist 2026.