Class 8 Mathematics
Welcome to the Class 8 learning hub! Here you will find chapter-by-chapter concept notes, solved examples, formula cheat-sheets, and curated video explanations designed to make math intuitive and enjoyable.
CBSE Class 8 Chapters
All Class 8 content is organized inside this /class8/ folder. Select any chapter below to view in-depth theory, step-by-step NCERT solutions, and formulas.
Rational Numbers
Properties of rational numbers (closure, commutativity, associativity), additive & multiplicative identity, and numbers between two rationals.
Linear Equations in One Variable
Solving linear equations with variables on one side, both sides, and real-life word problem modeling techniques.
Understanding Quadrilaterals
Polygons, angle sum property of convex quadrilaterals, types of quadrilaterals (trapezium, parallelogram, rhombus, rectangle, square).
Data Handling
Organizing raw data, frequency distribution tables, constructing histograms, reading pie charts, and elementary probability.
Squares and Square Roots
Properties of square numbers, Pythagorean triplets, prime factorisation method, and division method to find square roots of decimals.
Cubes and Cube Roots
Cube numbers, patterns in consecutive odd numbers, and finding cube roots by prime factorisation and estimation.
Comparing Quantities
Ratios, percentages, discounts, profit and loss, GST, and calculating Compound Interest using formula A = P(1 + r/100)ⁿ.
Algebraic Expressions & Identities
Monomials, binomials, polynomials, addition and multiplication of expressions, and the 4 standard algebraic identities.
Mensuration
Area of trapezium, general quadrilateral, surface area & volume of cube, cuboid, and cylinder with practical word problems.
Exponents and Powers
Powers with negative exponents, laws of exponents for integral exponents, and expressing small and large numbers in standard form.
Direct and Inverse Proportions
Understanding direct variation (x/y = k) and inverse variation (x·y = k) with speed, time, work, and unit conversions.
Factorisation
Common factors method, regrouping terms, factorisation using algebraic identities, and division of algebraic expressions.
Introduction to Graphs
Bar graphs, pie graphs, histograms, line graphs, Cartesian coordinates (x-axis, y-axis), and reading real-world linear relations.
Copy templates/chapter-template.html into this class8/ folder, rename it (e.g. ch02-linear-equations.html), and link it above.