BBISE Intermediate (HSSC) Mathematics (Class XI): syllabus, papers and marking

The 100-mark HSSC-I paper: 19 MCQs, 51 marks of short answers and 30 marks of long answers in a 3-hour paper.

BBISE HSSC-I model papers, published 11 October 2026 · Annual and Second Annual series · grades A++ to U (IBCC scale)

BBISE Inter Mathematics: where the marks go

BBISE’s HSSC-I Mathematics model paper (October 2026) is a 100-mark, 3-hour paper: 19 MCQs, 17 short questions of 3 marks (51) and five long questions of 6 marks (30). It opens with a complex-number item, i2026, and spans algebra, matrices, sequences, trigonometry and coordinate geometry.

Marks are lost on method not shown and on sign errors that run through a whole line of working. Our papers follow the published section marks.

How we mark a real script

Paper structure and what we mark

PaperTimeMarksWeightQuestions
Class XI · Section 1 — Multiple Choice (Class XI)3 h (whole paper)1919%19 MCQs, 1 mark each: write the question number and the correct option on the answer script
Class XI · Section 2 — Short Answers (Class XI)—5151%17 questions of 3 marks each
Class XI · Section 3 — Long Answers (Class XI)—3030%Five questions of 6 marks each

Syllabus outline

  1. Topics tested in the October 2026 model paper (the board has not posted a unit list):
  2. Complex numbers and powers of i
  3. Algebra and quadratic equations
  4. Matrices and determinants
  5. Sequences and series
  6. Trigonometric identities
  7. Coordinate geometry

How each paper is marked here

Where BBISE Inter Mathematics candidates lose marks

  1. Method not shown — A bare final answer on a four- or eight-mark question forfeits the method marks; show the formula and each substitution.
  2. Sign errors when expanding or transposing — A dropped minus sign in factorisation, quadratic or logarithm work carries through every later line and is rarely rescued.
  3. Constructions and proofs without justification — Geometry answers need the stated reason beside each step (given, theorem, construction), not just the conclusion.
  4. Wrong form of the answer — Answers left as unsimplified fractions, surds or decimals to the wrong accuracy lose the final mark.
  5. Graph or diagram without scale and labels — Coordinate geometry, statistics and trigonometry diagrams earn marks for the scale, axes and labelled points.

Sample papers, mark schemes and marked reports for BBISE Inter Mathematics

See a real handwritten script marked by eight examiners at admitportfolio.com/examiners.

Questions teachers ask

Why is there only Class XI?
BBISE’s October 2026 model papers are published for HSSC-I (Class XI) only; a Class XII layout has not been verified.
What is the first MCQ?
It asks for the value of i raised to the power 2026, which is solved with the four-step cycle of the powers of i.
Is this official BBISE marking?
No. Balochistan Board of Intermediate and Secondary Education, Quetta marks the real exam. This is examiner-style marking of mocks and homework for BBISE Inter Mathematics. Only you see the marking, and you decide what reaches the student.
Do you reproduce past-paper questions?
No. Every Class XI paper here is original and written to the bbise hssc-i model papers, published 11 october 2026, in the same structure as the real papers shown above.
Which papers are marked?
None yet are marked question by question; Class XI · Section 1 are scored instantly. Practical exams sat at the centre are not marked here.
How is the next paper chosen?
From the marks a student lost: the concepts behind them are ranked by marks dropped, and the new paper weights those topics. It is the same syllabus and structure, with new questions.
When are the exams?
Annual and Second Annual series. Grades A++ to U (IBCC scale).

Other BBISE Intermediate (HSSC) courses

Start marking Mathematics scripts · See a real marked script