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DSE M1 Drill Guide: Long-Question Steps and Timing
TUTORZONE EXAM DRILL GUIDE · DSE M1: SHORT AND LONG QUESTIONS
On M1 the gap is rarely the calculus itself: it is whether the long question is written step by step as marking points. The same answer earns full marks with every step and only the answer mark without. This page covers the drilling method only: the time ratio between short and long questions, the topic order, calculator habits and the error log.
How is DSE Mathematics Extended Part M1 assessed, and what does each part carry?
Section A (short questions): 8-12 short questions worth 50 marks (50 marks); Section B (long questions): 3-5 long questions worth 50 marks (50 marks); In the exam room: Statistical tables are provided; calculators are allowed (—)
Assessment at a glance (2027)
| Component | Content | Weighting | Duration |
|---|---|---|---|
| Section A (short questions) | 8-12 short questions worth 50 marks | 50 | 60-70 min |
| Section B (long questions) | 3-5 long questions worth 50 marks | 50 | 70-80 min |
| In the exam room | Statistical tables are provided; calculators are allowed | — | — |
Two and a half hours: about 60-70 minutes for Section A and 70-80 for Section B. M1 marks follow model, substitution, answer – on distribution questions write X ~ B(n, p) explicitly, or a right answer may not score.
What each paper is actually testing
| Paper | Drill focus | How marks are lost |
|---|---|---|
| Section A (short questions) | Differentiation, integration and binomial expansion must be reflexive | A short differentiation or integral shows only the result and loses all method marks. |
| Section B (long questions) | Formula first, then substitute; keep units and significant figures | The long question never states the random variable or the distribution assumed. |
| In the exam room | State the distribution and parameters on every distribution question | The calculator is left in the wrong mode and the statistics answer is out by a decimal place. |
What is each DSE Mathematics Extended Part M1 paper really testing, and what should you drill?
Section A (short questions): Differentiation, integration and binomial expansion must be reflexive; Section B (long questions): Formula first, then substitute; keep units and significant figures; In the exam room: State the distribution and parameters on every distribution question
Drill order: by topic, then by year, then the mark scheme
| Step | What you do | Why |
|---|---|---|
| 1. By topic | Work through each topic, starting with the paper that allows least help (no calculator / closed book) | Exposes what is genuinely not understood |
| 2. By year | Whole papers to time, one or two a week | Trains pace, stamina and question selection |
| 3. Mark scheme | Go through the marking scheme question by question and log the scoring steps you missed | Most lost marks are written wrong, not thought wrong |
Should drilling go by topic first or by year?
By topic first, then whole papers by year, then the mark scheme. The first third of the time goes topic by topic (8-10 years of the same topic back to back), the middle switches to timed whole papers, and the last fortnight only redoes the recurring errors from your log.
A 12-week drilling timetable
| Week | Phase | What to do |
|---|---|---|
| Weeks 1-3 | By topic: foundation | Topic by topic, starting with the easiest marks, building habits and recall |
| Weeks 4-6 | By topic: core | 8-10 years of the same topic back to back, errors classified by topic |
| Weeks 7-8 | By topic: advanced and electives | Elective and higher-order topics, now under time pressure |
| Weeks 9-10 | By year: timed papers | One full paper a week, timed, no reference materials |
| Week 11 | Mark scheme work | Question by question against the marking scheme; list the scoring steps you omitted |
| Week 12 | Plug holes and simulate | Only the recurring errors from your log, then one full exam simulation |
Subject-specific weighting for this timetable: Weeks one to four drill one topic of short questions in ten-minute sets, always writing to the last line. Weeks five to eight work only the opening of long questions, training the habit of writing the random variable and the assumption on sight. The final four weeks are timed whole papers, each followed by a check with a second method.
Use it properly: this is not a checklist to finish. Every week must keep time for redoing errors, or from week 9 you will be repeating the same batch.
Pacing
| Paper | Time | Suggested split |
|---|---|---|
| Section A (short questions) | 60-70 min | about 60-70 min |
| Section B (long questions) | 70-80 min | about 70-80 min |
| In the exam room | — | Check df and distribution type before using tables |
How should the time be split inside each DSE Mathematics Extended Part M1 paper?
Section A (short questions): about 60-70 min; Section B (long questions): about 70-80 min; In the exam room: Check df and distribution type before using tables
The drilling mistakes that cost the most marks
| Mistake | What it looks like | What actually happens | Instead |
|---|---|---|---|
| No distribution notation | Straight to a probability | The question asks for the distribution and its parameters | Write X ~ B(20, 0.05), then P(X = 2) = … |
| Skipping the z conversion | Reading tables without standardising | Normal questions require the z calculation | Write z = (x − μ) ÷ σ before using the table |
| Definite integrals without limits | Only the antiderivative | A definite integral must substitute both limits and subtract | Write [F(x)] and substitute immediately |
| Geometric vs binomial | Swapping the formulas | Geometric counts trials to the first success; binomial counts successes in n trials | Identify which question is asked first |
The error log and the mark scheme
Three columns: topic; the missing step (set-up, assumption, check); and the standard wording. Keep the statistics set-up sentences on one page so you can write them on sight and spend the saved time on the final part.
How many years should you drill?
The M1 structure has been stable recently, so older papers stay useful: time the last five as whole papers and split earlier ones between calculus and statistics. The official scheme lists a mark per line, so mark line by line, especially the checks and the concluding sentence.
How many years of past papers is enough?
The M1 structure has been stable recently, so older papers stay useful: time the last five as whole papers and split earlier ones between calculus and statistics. The official scheme lists a mark per line, so mark line by line, especially the checks and the concluding sentence.
Frequently asked questions
Is this page a mock paper or a drilling guide?
This is the DSE Mathematics Extended Part M1 drilling guide: assessment structure, drill order, a 12-week timetable, pacing, common mark losses and the error-log method. For questions with answers, use the DSE Mathematics Extended Part M1 mock papers linked under Related.
By topic or by year first?
By topic. Eight to ten years of the same topic back to back is what exposes repeating errors; going straight to whole papers just repeats the same batch under time pressure.
How should the error log be written?
Do not copy out questions. Per error record four things: question reference, which step failed (concept, wording, calculation), what the mark scheme requires, and the correct action next time.
May I just use the calculator functions?
Yes, but in practice write which function and what was entered. Otherwise a re-check cannot show where it broke, and some questions award marks only for shown steps.
Should statistics or calculus come first?
Statistics, because its set-up sentences are fixed and the marks are the steadiest. Calculus comes in the middle alongside the long questions, and only the last fortnight mixes both under time.
Official references
| Resource | What to use it for |
|---|---|
| HKEAA 2027 HKDSE Mathematics Assessment Framework (with Extended Part) | Confirm M1’s single paper at 100% over 2 h 30 min with 50 + 50 marks |
| https://www.tutorzone.com.hk/en-dse-m1-paper-drill-guide/ | M1 drilling guide |
Original mock: DSE Mathematics Extended Part M1 mock paper with answers; more practice in the practice area.
Next step: find a tutor / register as a tutor
After drilling, the hard part is telling a conceptual error from a writing error. Tell us the year group, the school and your available times, and TutorZone will match you with a tutor who knows the HKEAA assessment requirements.
Demand for tutors in this subject is steady, and those who can explain the marking scheme and where marks are won are especially sought after. Register free; you pay only when a match succeeds.
