Are the most common GCSE maths questions the same for Edexcel, AQA, OCR and Eduqas?

Broadly, yes. The wording and structure varies by exam board, but the core GCSE skills are consistent because the content is guided by the same national subject criteria. That’s why you keep seeing the same families of questions: percentage change, ratio sharing, solving equations, interpreting graphs, angles rules, and number properties like HCF and LCM. Where boards differ is in how they combine topics, or how “problem-solving” is framed in multi-step questions. For example, one paper might hide ratio inside a recipe context, while another hides it inside a speed or density context. But the underlying method is still ratio and proportion. If you revise the methods and practise across papers, you build flexibility rather than memorising one layout.

How can I revise GCSE maths efficiently if I feel like I’m bad at everything?

Start by narrowing the battlefield. Pick one common GCSE topic family (like fractions/percentages) and do three things in order: a lesson to learn the method, exam questions to practise, then a mark scheme to diagnose mistakes. Maths Genie is built for this loop, because you can move from revision lessons to exam questions and check your work with solutions. Don’t jump randomly between topics every ten minutes, because your brain never gets the repetition needed for confidence. Instead, do short focused blocks, then return a day later for spaced practice. Efficiency in GCSE revision is not doing more topics -- it’s doing fewer topics more deliberately until the errors disappear.

What’s the best way to use GCSE past papers without wasting them?

Treat a GCSE past paper like a mirror, not a scoreboard. Do one under timed conditions occasionally, but most of your improvement comes from targeted re-attempts. After marking, group your mistakes by type: arithmetic slips, method gaps, or exam technique issues like rounding and units. Then go straight to the relevant topic practice, and redo similar questions until you can’t get them wrong. Maths Genie past papers and resources help here because you can pair papers with mark schemes, and then use topic question packs to attack the exact weakness. If you only sit papers from start to finish, you will improve slowly because you keep repeating the same mistakes in new costumes. The fastest GCSE progress comes from reworking the questions you already got wrong, until they feel boring.

Do A Level students need to care about common GCSE questions?

Yes, more than you’d think. A Level maths assumes fluency in GCSE algebra, rearranging, fractions, and graphs, and the students who struggle often aren’t missing “A Level ideas” -- they’re missing GCSE automaticity. If expanding brackets still takes all your attention, you have less brain space for differentiation, proof, or modelling. Revisiting common GCSE question types is like tightening loose bolts before a long journey. It also builds exam discipline: clear lines, correct notation, and checking for reasonableness. Even ten minutes of GCSE skills practice a few times a week can make A Level work feel calmer.

Most Common GCSE Maths Questions (and How to Nail Them)

You sit down with a fresh GCSE paper and it feels like it could ask anything. But the longer you revise, the more you notice a quiet truth: GCSE maths is not infinite. It’s a small set of common GCSE question types, asked in slightly different outfits by Edexcel, AQA, OCR and Eduqas. The students who improve fastest aren’t the ones who “know everything” -- they’re the ones who recognise the shape of the question, choose the right method, and collect marks calmly.

This post is a practical guide to the most common GCSE maths questions, with worked examples and the habits that turn revision into grades.

Student untangling GCSE topics knot

A quick checklist for common GCSE question types

Before you go topic-by-topic, use this as a simple GCSE filter. If a question appears often in papers, it usually has three features: it’s easy to mark, it tests a core skill, and it links to multiple topics.

Here are the GCSE staples to prioritise:

Fractions, decimals and percentages (including percentage change and reverse percentages)
Ratio and proportion (sharing, scaling recipes, best buys)
Algebra manipulation (expand, factorise, simplify)
Linear equations and rearranging formulae
Graphs (straight lines and interpreting gradients/intercepts)
Angles (parallel lines, polygons)
Pythagoras and trigonometry (mainly higher tier, but Pythagoras appears widely)
HCF/LCM and prime factors

For each one, do this: learn the method, practise exam questions, then check against a mark scheme.

Useful Maths Genie pages to build that loop:

Fractions, decimals and percentages: the GCSE comfort blanket

If GCSE papers had a signature, it would be a percentage problem dressed up as “money saved”, “sale price”, or “percentage of an amount”. You’ll see it on foundation and higher because it’s a reliable way to separate careful working from guessing.

Maths Genie support:

Worked example: percentage change

A laptop costs £480. It is reduced by $15%15\%$ . Find the sale price.

A reduction of $15%15\%$ means you pay $85%85\%$ of the original:

\text{Sale price} = 0.85 \times 480 = 408

So the sale price is £408.

A GCSE habit that helps here: write the multiplier first. It prevents the classic “find $15%15\%$ then add it” mistake.

Worked example: reverse percentage (original value)

After a $20%20\%$ increase, the price is £84. Find the original price.

A $20%20\%$ increase means:

\text{New} = 1.2 \times \text{Original}

So:

\text{Original} = \frac{84}{1.2} = 70

The original price was £70.

Ratio and proportion: where GCSE marks hide in plain sight

Ratio questions look wordy, but they’re often short methods. Exam boards love them because they test proportional reasoning, arithmetic, and the ability to interpret context.

Worked example: sharing in a ratio

£72 is shared between A and B in the ratio $5 : 7$ . Find B’s share.

Total parts $= 5 + 7 = 12$ .

One part $\frac{72}{12} = 6$ .

B has $7$ parts:

\times 6 = 42

So B receives £42.

A GCSE tip: always write “total parts” as a line. It’s the clearest bit of working for method marks.

Algebra manipulation: the GCSE engine room

Algebra appears everywhere in GCSE: simplifying to make later steps possible. Most students lose marks here not because it’s hard, but because it’s rushed.

Worked example: expanding and simplifying

Simplify $3 (2 x - 5) - 2 (x + 4)$ .

Expand carefully:

3 (2 x - 5) = 6 x - 15

- 2 (x + 4) = - 2 x - 8

Combine like terms:

6 x - 15 - 2 x - 8 = 4 x - 23

So the answer is $4x−23\boxed{4x-23}$ .

Worked example: factorising a quadratic

Factorise $x^2 + 7x + 12$ .

We need two numbers that multiply to $12$ and add to $7$ : $3$ and $4$ .

x^2 + 7x + 12 = (x+3)(x+4)

This is one of the most common GCSE question styles because it links to solving equations and graph roots.

Linear equations and rearranging formulae: predictable GCSE structure

The GCSE pattern is often: simplify first, then solve. Or rearrange first, then substitute.

Worked example: linear equation

Solve $5 (2 x - 1) = 3 x + 11$ .

Expand:

10 x - 5 = 3 x + 11

Collect terms:

10 x - 3 x = 11 + 5

7 x = 16

Divide by $7$ :

\frac{16}{7}

You’ll often get fractions like this in GCSE higher tier papers, and it’s completely fine.

Worked example: rearranging a formula

Make $x$ the subject of $y = 4 x - 3$ .

Add $3$ :

y + 3 = 4 x

Divide by $4$ :

\frac{y+3}{4}

A GCSE mark scheme usually rewards clean algebra lines here. Don’t try to do it in your head.

Exam hall spinning wheel of topics

Graphs and straight lines: the GCSE “interpretation” questions

Even when the algebra is simple, GCSE graphs reward interpretation: what does the gradient mean, where is the intercept, what happens if you change a coefficient?

Worked example: find gradient from two points

A line passes through $(2, 5)$ and $(8, 17)$ . Find the gradient.

Use:

\frac{y_2-y_1}{x_2-x_1}

So:

\frac{17-5}{8-2} = \frac{12}{6} = 2

Gradient $= 2$ .

GCSE papers then often ask for the equation. Using $y = m x + c$ and point $(2, 5)$ :

\Rightarrow c = 1

So the equation is:

y = 2 x + 1

Angles: a GCSE favourite because it’s quick to mark

Angles questions appear constantly across exam boards because they test geometry facts and careful reasoning.

Worked example: angles in a polygon

Find the sum of interior angles of a $9$ -sided polygon.

Use:

\text{Sum} = (n-2)\times 180

With $n = 9$ :

\text{Sum} = (9-2)\times 180 = 7\times 180 = 1260

So the sum is $1260∘1260^\circ$ .

GCSE advice: write the formula. Even if you slip on arithmetic, the method mark is there.

HCF, LCM and prime factors: the GCSE topic that comes back every year

These questions are common because they can be asked in a basic form (find HCF) or a context form (buses, flashing lights). They also appear as early questions that students should secure.

Maths Genie exam practice:

HCF and LCM exam questions (PDF)

Worked example: LCM by listing multiples

Find the LCM of $12$ and $18$ .

Multiples of $12$ : $\dots$

Multiples of $18$ : $\dots$

The first common multiple is $36$ , so:

\text{LCM}(12,18)=36

In higher tier GCSE, you may be expected to use prime factors, but listing is still valid when numbers are manageable.

Common mistakes in GCSE maths (and how to stop making them)

These are the errors that show up again and again in GCSE mark schemes, not because students “don’t know the topic”, but because they skip a small discipline.

Treating percentages additively instead of multiplicatively

A $20%20\%$ decrease is not “minus 20”. It’s multiplying by $0.8$ . A $20%20\%$ increase is multiplying by $1.2$ . When you think in multipliers, reverse percentage questions become routine.

Losing minus signs in algebra

Most algebra errors are sign errors. A useful GCSE habit is to expand one bracket per line, then combine at the end. If you try to do expansion and collecting simultaneously, you increase the chance of dropping a negative.

Not showing enough working for method marks

GCSE mark schemes often give marks for method even if the final answer is wrong. If your page only contains an answer, there’s nothing to reward. Write the key line: the equation you used, the substitution, or the formula.

Units and rounding

If the question says “give your answer to $3$ significant figures” and you give a full decimal, you risk losing the final accuracy mark. If it asks for money, include £. If it’s an angle, include $∘^\circ$ . These are small GCSE habits that add up.

Marks machine rejects answer-only slip

Bringing it together: turn common GCSE questions into automatic marks

The point of learning the most common GCSE maths questions isn’t to guess what will be on your paper. It’s to become the kind of student who can handle whatever appears because the foundations are strong. When you can do percentages, algebra, graphs, angles, and number properties without panic, the rest of the paper becomes navigable.

If you want a simple next step, use Maths Genie as your revision engine:

Start with a revision lesson, then practise the matching exam questions
Use Predicted GCSE revision papers and resources to focus on likely topics
Use AQA GCSE Maths papers (or your exam board’s papers) with mark schemes to learn what earns marks
Check the GCSE revision for Summer 2025 (Likely topics list) to organise your next week

Make the common GCSE questions your comfort zone. Then, when the paper tries to surprise you, it won’t feel like a trap -- it’ll feel like another version of something you’ve already mastered.