Exam Strategy
What the Mark Allocation Is Actually Telling You to Do
Most students glance at the mark allocation next to a question just to know how many marks are at stake, then ignore it while working. That number is more useful than that — it's one of the clearest, most consistently reliable signals in the entire question for how much working you need to show.
Grade 10–12 · CAPS · NSC Mathematics
The Basic Rule: Marks Roughly Match Steps
NSC marking memoranda are built around allocating one mark per distinct, correct step — a correct substitution, a correct simplification, a correct method choice, a correct final answer. This means a question worth 2 marks is signalling that the examiner expects roughly two identifiable pieces of correct working: perhaps the correct setup and the correct final value. A question worth 6 marks is signalling several distinct steps — set up the method, substitute correctly, simplify correctly, and reach the final answer, each of which may be worth its own mark.
What Low Mark Allocations Usually Mean
A question worth 1 or 2 marks is rarely asking for an extended derivation. If you find yourself writing four lines of algebra for a 1-mark question, that's a signal worth pausing on — either the question is simpler than you're treating it (check the instruction word: is it actually a "write down" or "state" question requiring no working at all?), or you've misunderstood what's being asked and are solving a harder, adjacent problem instead of the one on the page.
What High Mark Allocations Usually Mean
A question worth 5 marks or more is telling you the examiner expects to see your reasoning broken into visible, separate steps — not just a correct final answer arrived at through mental shortcuts. Even if you can do the calculation quickly in your head, write out each stage explicitly: state the formula or identity you're using, show the substitution, show the simplification, then state the final answer clearly. Skipping stages on a high-mark question is one of the most common ways strong students lose marks despite having the correct final answer — the marks are for the visible steps, not just the result.
Use the Mark Allocation to Sanity-Check Your Method Choice
If a question is worth 2 marks and the method you've started using would take ten minutes and several pages, that's a strong signal you've picked the wrong method — NSC questions are calibrated so the intended approach roughly matches the marks available. Before committing to a long derivation, check the mark allocation: if it's low, there is very likely a shorter, more direct route the question is expecting, often signalled by an instruction word like "write down" or by a structural connection to an earlier part (see our guide on the word "hence").
A Practical Habit: Count Backwards From the Marks
Before you start writing, glance at the mark allocation and ask: how many distinct steps would I expect to see in a full-marks answer to this? For a 4-mark question, that might mean: (1) correct formula stated, (2) correct substitution, (3) correct simplification, (4) correct final answer. Writing your solution with those checkpoints in mind — even briefly labelling them in your head as you go — makes it far less likely you'll skip a step the marker is specifically looking for.
Combine this with knowing exactly what each instruction word requires — see the full instruction word guides and topic guides.