Class 9 CBSE Maths — the 5 chapters that carry the most marks

The 2026-27 CBSE Class 9 Maths blueprint

The CBSE Class 9 Maths exam is 80 marks. Internal assessment is 20. The paper has five sections and a fixed unit-wise mark distribution:

The 5 chapters to master first

1. Polynomials (Ch 2) — ~14 marks potential The Remainder Theorem and Factor Theorem are compulsory every year. Learn the standard algebraic identities up to (a+b+c)². Practise factorisation by splitting middle term until it's automatic.

2. Triangles (Ch 7) — ~10 marks Congruence criteria (SAS, ASA, SSS, RHS) appear in every paper. The CBSE loves "prove that..." questions from this chapter. Memorise the 4 congruence criteria and the theorem statements.

3. Surface Areas and Volumes (Ch 11) — ~8 marks Pure formula recall + application. Make a formula sheet for cube, cuboid, cylinder, cone, sphere, hemisphere — both surface areas and volumes. Revise it daily until exam.

4. Quadrilaterals (Ch 8) — ~7 marks Mid-point theorem and its converse. Properties of parallelogram. Nearly guaranteed 5-mark question here every year.

5. Statistics (Ch 12) — ~6 marks Mean from grouped/ungrouped data, construction of histograms and frequency polygons. Mechanical once practised.

How to attack each chapter

• Read the NCERT chapter once.
• Do every in-text question.
• Do every exercise question.
• Do the NCERT Exemplar problems for that chapter.
• Revise the worked examples the night before any test.

That's it. No reference book needed for 80% score.

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