JEE Main · subject
JEE Main Maths preparation: chapter-wise weightage and PYQ practice
Mathematics carries 25 of the 75 questions in JEE Main and 100 of the 300 marks, drawn from 14 syllabus units. This page ranks every unit by weight in past papers, and is blunt about the real cost in Maths, which is time rather than difficulty.
Quick answer
- JEE Main Mathematics has 14 syllabus units, examined through 25 questions — 20 MCQs and 5 numericals — worth 100 marks.
- In our analysis of past papers, calculus (5–7 questions) and coordinate geometry (3–5) together account for roughly a third of the Maths paper.
- Most students lose more Maths marks to time than to difficulty: the section is long, and unfinished questions cost as much as wrong ones.
- BrainStride is an AI tutor for JEE, NEET and Olympiad preparation that runs a 20-minute diagnostic, maps your weak chapters and writes a daily plan, with every solution checked by teachers.
Which JEE Main Maths chapters carry the most questions?
BrainStride analysis of past papers · questions per shift, ranges vary · NTA publishes no chapter weightage
All 14 Mathematics units, ranked by what they cost you
Unit names follow the official JEE Main syllabus. The question ranges are ours, from past papers; the mistake column is the slip our teachers see most often on that unit.
| Unit | Class | Questions per paper | Difficulty | The mistake it catches |
|---|---|---|---|---|
| Sets, Relations and Functions | 11–12 | 1–2 Q | Moderate | Domain checked after solving instead of before, so extra roots survive. |
| Complex Numbers and Quadratic Equations | 11 | 1–2 Q | Moderate | Losing a root by squaring, or forgetting that complex roots come in pairs. |
| Matrices and Determinants | 12 | 1–2 Q | Easy–moderate | Row operations applied to a determinant as if it were a matrix equation. |
| Permutations and Combinations | 11 | 1–2 Q | Moderate–hard | Counting arrangements twice because identical objects are treated as distinct. |
| Binomial Theorem and its Simple Applications | 11 | 0–2 Q | Easy–moderate | Off-by-one in the general term: the (r+1)th term, not the rth. |
| Sequence and Series | 11 | 1–2 Q | Moderate | Using the AP sum formula on a series that stops being arithmetic partway. |
| Limit, Continuity and Differentiability | 11–12 | 2–3 Q | Moderate | L’Hôpital applied where the limit is not of an indeterminate form. |
| Integral Calculus | 12 | 2–3 Q | Moderate–hard | Definite integrals solved without changing the limits after a substitution. |
| Differential Equations | 12 | 1–2 Q | Moderate | Integrating factor written for the wrong variable when the equation is in dx/dy. |
| Co-ordinate Geometry | 11 | 3–5 Q | Moderate | Standard-form conditions quoted for a conic that has been shifted or rotated. |
| Three Dimensional Geometry | 11–12 | 1–2 Q | Moderate | Direction ratios not normalised before using the angle formula. |
| Vector Algebra | 12 | 1–2 Q | Easy–moderate | Scalar and vector triple products confused, so the answer has the wrong type. |
| Statistics and Probability | 11–12 | 1–2 Q | Moderate | Conditional probability treated as independent, so Bayes is skipped. |
| Trigonometry | 11–12 | 1–2 Q | Moderate | General solutions dropped: one value reported where a family was asked for. |
Ranges are per shift and overlap — a single paper has 25 Maths questions, so no shift draws on every unit.
Top 5 mistakes in JEE Main Maths
Four of these are time and method errors, not gaps in what you know.
Committing to a long method
Why it happens
A question is solved the way it was taught in class, when substitution or elimination of options would take a third of the time.The fix
Spend ten seconds choosing a method before starting. In a 25-question section, that choice is worth more than speed.Substitution without changing limits
Why it happens
In a definite integral the variable changes but the limits stay, so a correct antiderivative gives a wrong number.The fix
Write the new limits on the same line as the substitution, before integrating.Domain checked at the end
Why it happens
Extra roots survive because the domain of the original expression is only considered once an answer appears.The fix
Write the domain before solving, and strike out roots as they fail it.Standard conic results on a shifted curve
Why it happens
Condition formulas memorised for the standard form are applied to a translated or rotated conic.The fix
Shift the curve to standard form first, or derive the condition in the given frame.Staying with a stuck question
Why it happens
Sunk cost: five minutes are already spent, so a sixth follows, and two easier questions go unattempted.The fix
Set a per-question ceiling of roughly two minutes on the first pass, and mark the rest for a second pass.Which JEE Main Maths chapters should I study first?
Calculus and coordinate geometry, because between them they carry roughly a third of the section in our reading of past papers, and both reward method over memory. Algebra — matrices and determinants, sequences, probability — comes next: the questions are shorter, so the marks per minute are good once the standard results are secure. Trigonometry and vectors are small but appear almost every shift, which makes them poor candidates for dropping.
How do I get faster at JEE Main Maths?
Speed in Maths is mostly method selection, not arithmetic. Two habits do the work:
- Solve previous-year questions with a clock from the start, not after the syllabus is finished. The clock is what teaches you to abandon a long method.
- Keep a log of the questions you abandoned and re-solve them the next day. The pattern in that log is usually one or two chapters, not a general weakness.
BrainStride tags each wrong answer as a concept gap, a silly error or time pressure, and a time-pressure tag sends timed sets rather than fresh theory — which is the difference between practising and just doing more questions.
Is JEE Main Maths harder than Physics?
Most students find the Maths section longer rather than harder: the individual questions are approachable, but 25 of them inside a shared three-hour paper is tight. That is why accuracy under time, tracked in your weekly report, is a better measure of readiness in Maths than chapter coverage. Use the rank predictor to see what a realistic Maths score does to your band.
Chapter guides for this subject
Formulas, the mistakes that cost marks, worked examples and a quiz — free, no account.
- Chapter guideCoordinate GeometryCoordinate geometry carries three to five of the 25 JEE Main Mathematics questions in our reading of past papers, which makes it the second-largest block after calculus.
- Chapter guideDefinite IntegralsDefinite integrals carry one to two of the 25 JEE Main Mathematics questions in our reading of past papers, inside a calculus block of five to seven.
Where to go next
Everything here is free and needs no account.
- SyllabusJEE Main syllabus, unit by unitEvery Mathematics unit with its topics and NCERT chapters.
- PatternJEE Main exam pattern and markingHow the 75 questions and 300 marks are split, and what negative marking costs.
- ToolJEE Main rank predictorTurn expected marks into a percentile and all-India rank band.
- ToolSyllabus trackerTick off Maths units as you finish them, by class.
- SubjectJEE Main PhysicsChapter weightage and the five mistakes that cost the most marks.
- HubJEE Main 2027 preparationDates, pattern, cutoffs and how a BrainStride plan is built.
How the Maths content here is checked
Every solution is reviewed by a subject teacher before it ships, and explanations are audited weekly. The teachers are on staff, so we describe the process rather than publish a roster.
Read the editorial policy- Owns the Mathematics solution bank
- Calculus and coordinate geometry
- Weightage ranges are our own reading of past papers — NTA publishes none.
- Report anything that looks wrong and it is fixed or explained within 48 hours.
JEE Main Maths questions students ask
Anything missing? Write to hello@brainstride.co — a mentor replies, not a bot.
Which chapters are most important for JEE Main Maths?
In BrainStride’s analysis of past JEE Main papers, calculus — limits, continuity and differentiability, integral calculus and differential equations — carries 5–7 of the 25 Maths questions, and coordinate geometry another 3–5. Algebra, covering matrices, sequences and probability, adds 4–6. NTA publishes no official weightage, so treat these as past-paper ranges.
How many questions come from calculus in JEE Main?
Calculus accounts for about five to seven of the 25 JEE Main Mathematics questions in our reading of recent papers, split between limits and differentiability, integral calculus and differential equations. It is the single largest block in the section, and definite integrals are where most avoidable marks are lost, usually to limits not changed after a substitution.
How can I finish the JEE Main Maths section in time?
Treat the first pass as a filter: give each question about two minutes, mark anything longer and move on. Most students who run out of time in JEE Main Maths lose it to two or three questions they refused to abandon, not to slow arithmetic. Practising previous-year papers with a clock from the beginning is what builds that habit.
Is JEE Main Maths harder than JEE Advanced Maths?
No. JEE Advanced Mathematics asks multi-concept questions with partial marking and no fixed pattern, so it is harder in depth. JEE Main Maths is harder in pace: 25 questions in a shared three-hour paper, with +4 and −1 marking. A student comfortable in Main still needs depth practice for Advanced.
Can I skip any chapter in JEE Main Maths?
Skipping is risky because the section samples widely: with fourteen syllabus units and 25 questions, most units appear once or twice in a shift. Even Binomial Theorem, among the lightest, shows up in most papers. Finish calculus and coordinate geometry first, then close the small units rather than dropping them.
Do I need to memorise formulas for JEE Main Maths?
You need the standard results — trigonometric identities, conic conditions, standard integrals — fast enough to recall under time, but memorising without deriving them once is what produces the common error of applying a standard-form result to a shifted curve. Learn each result with the condition it holds under, then practise until recall is automatic.
Official sources
- JEE Main — National Testing Agency (pattern and syllabus in the information bulletin)jeemain.nta.nic.in
- National Testing Agencynta.ac.in
BrainStride is not affiliated with NTA. Chapter weightage is our own analysis of past papers — NTA publishes none. Confirm the syllabus and pattern against the current official bulletin.
Is it the Maths chapters, or the clock?
The 20-minute diagnostic separates concept gaps from time pressure, then plans around whichever it is.