A Level Maths Exam Technique: Your Complete Guide

The four areas of exam technique I'd suggest working on, from practising under timed conditions to going back over your mistakes properly, and how to practise each one.

Andy Parker
Andy ParkerLead Tutor · May 2026

In my experience, the students who get the top grades aren't always the strongest mathematicians. They're the ones who have practised exam technique, which is a separate skill from knowing the maths.

Sound familiar?
  • Your grades don't reflect how well you know the maths
  • The test comes back full of silly mistakes
  • You "get it" in lessons, but the marks don't come

If so, it's usually not the maths. It's that exam technique hasn't had enough practice time of its own. This guide covers the four habits that close the gap.

Part 01

Practise under exam conditions

So the clock and the pressure feel normal on the day.

If the exam is the only time you work against the clock, it shows: you run short of time, nerves take over, and careless slips cost you method marks you would normally pick up.

So make a practice paper feel like the real thing, often enough that the real thing feels like practice.

1min per mark

A 100-mark paper gets about 2 hours. Allow a little more for the long questions at the end.

Set it up like the real thing

  • Write on a printed exam paper, not lined paper. Fitting your answer in the space is part of the practice.
  • Phone in another room, every other tab closed.
  • Answer from memory. No notes.
  • Write full solutions, not rough working to copy up later.
  • Check your own work before you open the mark scheme.

The pressure never disappears completely. But each time you practise under it, it gets easier to manage.

If you run out of space

How much room you get depends on the board, which is why practising on the real paper matters. On AQA papers you can run out of space even when your working is perfect.

Edexcel
Rarely. Usually plenty of room.
OCR
Mostly after a mistake.
AQA
Even when it's all right.

When it happens, use the extra paper they provide. The risk is that the examiner never finds it, so signpost it at both ends:

In the answer space
Continued on extra paper →
At the top of the extra paper
Question 7(b) continued
Part 02

Communicate clearly

So the examiner can find every method mark.

Maths isn't only about getting the right answer. Examiners are human, and they don't have long to search through a disorganised solution. Here is one question, answered by two students who both knew how to do it.

The questionFind the equation of the tangent to the curve \( y = x^3 - 5x \) at the point where \( x = 2 \).
Student A
Messy handwritten working, marked in red pen. The arrows are circled and marked "= ?". Beside 7: "which is the gradient?". The working jumps across the page and back, marked "order?". A 6 is forced over a 2, marked "12 or 16?". The last line has no y =, marked "y = ?".

Knew the method. Made the examiner hunt for it.Every red note is a mark the examiner has to decide whether to give.

Student B
Clear handwritten working with a green tick on every line: dy/dx = 3x squared minus 5; at x = 2, gradient = 7; y = minus 2; point (2, minus 2); y minus (minus 2) = 7(x minus 2); y + 2 = 7x minus 14; and y = 7x minus 16, boxed.

Same maths. Every mark easy to find.Labelled, one step per line, answer boxed.

Nothing Student B did is clever. It's a handful of habits, and every one of them can be practised.

Say what you're calculatingWrite "gradient of AB =", not a number on its own.
Cross out with one lineNever write over a mistake. One line keeps it readable.
Use ⇒ only when you mean itAn arrow is the implication symbol, not "and then".
Link your steps"Substituting (1) into (2):" or "Since AB is perpendicular to BC…"
Give it roomWrite on the printed lines and don't squash working into a corner. Carry on further down, or on extra paper.
Leave space between questionsRoom to come back later, and a clear break for the examiner.

Clear working can earn most of the marks, even when the final answer is wrong.

Part 03

Reduce careless mistakes

By checking every time you practise, not just in the exam.

In my experience, careless mistakes are the most common reason students drop marks. Everyone makes them. Strong students catch them, because checking is a habit they built in practice.

If you only try to check when you're in the exam, you'll forget to do most of it.

Re-read the questionBy the end of a long question the details have faded. Did you answer what was asked, to the accuracy asked (exact? 1 d.p.?), in the form asked?
Read the displayWhile you type, you're watching the buttons. Read back the whole expression on the screen, not just the answer.
Draw the diagramEspecially in coordinate geometry, mechanics and vectors. It shows up errors the algebra hides.
Check line by lineCompare each line with the one before. It only works if your pace leaves time, and it gets quicker with practice.

Know your calculator

A calculator is a fast way to check an answer, but only if you're fluent with it. If it doesn't come naturally, you won't use it under pressure. Practise these until they're automatic:

EQNQuadratics, cubics and simultaneous equations
SOLVERoots, intercepts and turning points
d/dx ∫Numerical calculus. Remember these are decimal approximations
STOStore values you'll need again, such as in a long trig calculation

Key names vary between models.

Worth knowingA calculator can check an answer. It can't show a method.Almost any question becomes a non-calculator question with two words: "Show that…". Then only the method counts. Not sure yours is up to the job? Read our guide to choosing one.
Part 04

Reflect on your mistakes

So the ones you make in practice stay in practice.

Marking tells you what went wrong. Reflecting tells you why, and that's the part that stops it happening again.

  1. AttemptA set of questions, under exam conditions
  2. CheckYour own work, before the mark scheme
  3. Mark strictlyMethod mark by method mark. Write the score down
  4. Find the whyA full worked solution, for the method and the setting out
  5. Retry laterFrom your list of the ones you got wrong
Then go round again
Worth knowingCorrections aren't a hoop to jump through.Copying out the mark scheme so you can say you've "done your corrections" throws away one of the fastest ways to improve. If you don't know you're making a mistake, you can't fix it, and you'll keep making it, in the final exam too.

For slips that keep coming back, keep a log. Every time one comes back, add a mark next to it. Reading it before every exam puts your repeat offenders at the front of your mind.

My mistake log3 repeat offenders
Sign error−(x − 3) = −x − 3×3
Lost the ±x² = 9, so x = 3×2
Missing trig solutionssin x = ½, so x = 30° only×4

An example page. Yours will have your own.

If the mistake is in the idea rather than the arithmetic, the mark scheme is sometimes enough to see it. If it isn't, ask for help sooner rather than later, and annotate your correction so you can see later what you were thinking.

If this happensLog keeps pointing at one topic?Go back over the ideas behind it. More questions on their own won't fix it.

Pulling it together

Exam technique builds up over months, not the night before, and the four habits feed each other. Timed practice builds the pace that leaves time to check. Clear working is easier to check. Checking means fewer errors reach the examiner, and reflecting stops the same ones coming back.

Work on all four through the course, and the exam will feel familiar when you get there.

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Andy Parker

Written by

Andy Parker, Lead Tutor

I run A Level Maths Academy and The A Level Maths Tutor, and teach the course every week. These guides come from the questions students actually ask me, usually more than once. More about me.

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