HKDSE Maths (Core) study materials
HKDSE Maths (Core) study resources

HKDSE Maths (Core) study plan

HKDSE Maths (Core) · Give each week a clear focus.

8 weeks · About 6 hours per week

Week 1

Compulsory Part (Mathematics)

  • Classify every question in a 40-question mixed set by Paper 1 (long-form, working required) versus Paper 2 (multiple choice) format and by topic, then rank the topics by how many marks you lost on a cold diagnostic attempt

  • Solve 25 quadratic equations using factorisation, completing the square and the quadratic formula, and state for each which method was fastest and why

  • Derive the discriminant condition for real, repeated and no real roots, then use it to answer 10 'find the range of k' style questions without solving the equation

  • Sketch 8 quadratic graphs from completed-square form, labelling the vertex, axis of symmetry and y-intercept, and connect each feature to the algebraic form

Your checkpoint

A one-page diagnostic error log listing your 10 weakest topics with the mark loss and the exact step where each error occurred

Week 2

Compulsory Part (Mathematics)

  • Apply all three index laws and the laws of logarithms to simplify 20 expressions, including changing base and solving a^x = b by taking logarithms

  • Solve 15 simultaneous equations, mixing one linear plus one quadratic with two linear, and verify each answer by substitution

  • Formulate and solve 10 word problems by translating them into equations (age, rate, mixture and consecutive-integer types) and define the variable explicitly before solving

  • Prove 5 algebraic identities using the difference of two squares and perfect-square expansions, writing each line as a logical step rather than a jump

Your checkpoint

A timed 45-minute set of 12 algebra questions scored and corrected, with every wrong answer reworked in full

Week 3

Compulsory Part (Mathematics)

  • State and apply the remainder theorem and factor theorem to find unknown coefficients in 12 polynomial questions

  • Perform long division and synthetic division of polynomials and express results in the form dividend = divisor x quotient + remainder

  • Use the factor theorem to factorise cubics completely and hence solve cubic equations

  • Handle variation problems (direct, inverse, joint, partial) by first writing the proportionality statement, then substituting to find the constant

Your checkpoint

A formula-and-method card covering indices, logarithms, polynomials and variation, written from memory then checked against notes

Week 4

Compulsory Part (Mathematics)

  • Solve 15 equations involving absolute values, rational expressions and surds, and identify and reject extraneous roots

  • Apply the midpoint, distance, slope and section formula to 12 coordinate geometry problems, including finding a locus equation

  • Find the equation of a straight line in general, slope-intercept and point-slope forms and convert between them fluently

  • Solve linear inequalities in one unknown and represent the solution on a number line, including compound 'and/or' cases

Your checkpoint

A full mock Paper 2 (45 multiple-choice questions) attempted under 75 minutes, with a topic-by-topic accuracy table

Week 5

Compulsory Part (Mathematics)

  • State and apply the sine, cosine and area formulae for triangles, and use the cosine formula to find an unknown side or angle in 12 problems

  • Apply the sine and cosine rules to 3D figures by identifying the correct planar triangle and drawing the diagram before calculating

  • Use bearings and angles of elevation/depression in 8 multi-step problems, sketching the north line and marking all given angles

  • Solve trigonometric equations for a given range and state the general solution pattern

Your checkpoint

A set of 10 trigonometry and mensuration questions solved with full diagrams, including at least 3 three-dimensional problems

Week 6

Compulsory Part (Mathematics)

  • Compute arc length, sector area, volume and surface area of prisms, pyramids, cylinders, cones and spheres, and solve similar-solid ratio problems

  • Apply the properties of circles (angle at centre, angle in semicircle, cyclic quadrilateral, tangent-radius) to prove 8 geometric statements

  • Write two-column or paragraph proofs for congruent and similar triangles, justifying every statement with a named reason

  • Solve 10 mensuration word problems involving composite solids and rate of flow

Your checkpoint

A geometry proof portfolio of 8 fully reasoned proofs, each with a named theorem cited for every step

Week 7

Compulsory Part (Mathematics)

  • Compute mean, median, mode, range, interquartile range and standard deviation from raw data and from grouped frequency tables

  • Construct and interpret box-and-whisker plots, histograms and cumulative frequency curves, and read quartiles and percentiles from them

  • Apply basic probability rules including the addition rule, independent events and conditional probability to 15 problems

  • Distinguish permutation from combination and solve 10 arrangement problems with repetition and restriction cases

Your checkpoint

A statistics and probability summary sheet with 6 worked examples of each calculation type, plus a 30-question timed drill scored

Week 8

Compulsory Part (Mathematics)

  • Complete a full Paper 1 under exam conditions in 135 minutes and a full Paper 2 in 75 minutes back-to-back on separate days

  • Mark both papers against a marking scheme and classify every lost mark as knowledge gap, method error, careless slip or time pressure

  • Re-drill the top 5 recurring error types from weeks 1 to 7 with 10 targeted questions each

  • Build a final one-page 'exam-day sheet' of formulas, common traps and timing checkpoints, then reproduce it from memory

Your checkpoint

A completed error analysis report for both mock papers with a prioritised revision list and a verified exam-day formula sheet

Milestones

Week 2: Score at least 70% on a self-marked 12-question algebra set within 45 minutes, with all working shown

Week 4: Score at least 55% on a full Paper 2 mock (45 MC questions) in 75 minutes, and identify at least 3 topics where accuracy is below 50%

Week 6: Produce 8 geometry proofs where every step carries a named reason, and score at least 60% on a 10-question mensuration set

Week 8: Achieve at least 60% on Paper 1 and 65% on Paper 2 in full timed mocks, with fewer than 5 marks lost to careless slips