Are all answers provided here?

No. This is a map and guidance page. Full step-by-step solutions are in the individual exercise solutions pages for each chapter.

Tamil Nadu Class 8 Maths Textbook Solutions Map — Samacheer Kalvi

How to Use This Map

1. Identify the chapter or skill you are revising. 2. Find the relevant exercise below. 3. Attempt all questions in your notebook. 4. Check solutions in the corresponding chapter solutions page.

Chapter 1 — Rational Numbers

Exercise	Topics Covered	Skills Tested
Exercise 1.1	Representation and standard form	Converting to standard form, comparing
Exercise 1.2	Addition and subtraction	LCM method, negative fractions
Exercise 1.3	Multiplication and division	Simplification, reciprocals
Exercise 1.4	Properties	Verification of commutative, associative, distributive
Practice Problems	Mixed operations	All operations combined

Key advice: Every exercise must be solved in full working. Answers without steps get zero marks in exams.

Chapter 2 — Measurements

Exercise	Topics Covered	Skills Tested
Exercise 2.1	Area of trapezium	Applying formula, finding unknown sides
Exercise 2.2	Area of rhombus	Diagonal formula, finding unknown diagonal
Exercise 2.3	Cube — surface area and volume	LSA, TSA, volume calculation
Exercise 2.4	Cuboid — surface area and volume	TSA, volume, capacity in litres
Word Problems	Real-life applications	Cost of painting, capacity of tanks

Chapter 3 — Algebra

Exercise	Topics Covered	Skills Tested
Exercise 3.1	Expansion using identities	Applying (a±b)² and (a+b)(a−b)
Exercise 3.2	Numerical applications	Using identities to evaluate 101², 99×101
Exercise 3.3	Factorisation — common factor	HCF extraction
Exercise 3.4	Factorisation — grouping	Regrouping terms
Exercise 3.5	Factorisation — using identities	Recognising identity patterns

Chapter 4 — Geometry

Exercise	Topics Covered	Skills Tested
Exercise 4.1	Angles in triangles	Angle sum, exterior angle
Exercise 4.2	Congruence of triangles	Identifying criterion, writing proofs
Exercise 4.3	Properties of quadrilaterals	Finding angles, applying properties
Construction	Constructing congruent triangles	Compass and ruler construction

Chapter 5 — Coordinate Geometry

Exercise	Topics Covered	Skills Tested
Exercise 5.1	Plotting and identifying points	Quadrant identification, labelling
Exercise 5.2	Distance formula	Calculating distance, collinear check
Exercise 5.3	Applications	Triangle vertices, distance problems

Chapter 6 — Statistics

Exercise	Topics Covered	Skills Tested
Exercise 6.1	Mean	Calculating mean for ungrouped data
Exercise 6.2	Median and mode	Arranging data, finding central values
Exercise 6.3	Bar charts and pie charts	Drawing and reading charts

Chapter 7 — Graphs

Exercise	Topics Covered	Skills Tested
Exercise 7.1	Drawing linear graphs	Table of values, plotting, joining
Exercise 7.2	Reading graphs	Finding values from graphs
Exercise 7.3	Real-life graphs	Distance-time, cost graphs

Chapter 8 — Information Processing

Exercise	Topics Covered	Skills Tested
Exercise 8.1	Number patterns	Identifying and extending patterns
Exercise 8.2	Fibonacci sequence	Finding terms, applications
Exercise 8.3	Magic squares	Constructing and verifying

Completion Tracker

Chapter	Exercise Done	Corrected	Score
1 Rational Numbers	☐	☐	/20
2 Measurements	☐	☐	/20
3 Algebra	☐	☐	/20
4 Geometry	☐	☐	/20
5 Coordinate Geometry	☐	☐	/15
6 Statistics	☐	☐	/15
7 Graphs	☐	☐	/15
8 Information Processing	☐	☐	/15

Frequently Asked Questions

This page lists every exercise set in the Class 8 Maths textbook, the skills each exercise tests, and tips for solving them. Use it to plan your study and to find which exercise to practise for each skill.