Tamil Nadu Board of Secondary Education Class 6 Mathematics Syllabus - Free PDF Download
Tamil Nadu Board of Secondary Education Syllabus 2025-26 Class 6: The Tamil Nadu Board of Secondary Education Class 6 Mathematics Syllabus for the examination year 2025-26 has been released by the Tamil Nadu Board, Tamil Nadu Board of Secondary Education. The board will hold the final examination at the end of the year following the annual assessment scheme, which has led to the release of the syllabus. The 2025-26 Tamil Nadu Board of Secondary Education Class 6 Mathematics Board Exam will entirely be based on the most recent syllabus. Therefore, students must thoroughly understand the new Tamil Nadu Board of Secondary Education syllabus to prepare for their annual exam properly.
The detailed Tamil Nadu Board of Secondary Education Class 6 Mathematics Syllabus for 2025-26 is below.
Academic year:
Tamil Nadu Board of Secondary Education Class 6 Mathematics Revised Syllabus
Tamil Nadu Board of Secondary Education Class 6 Mathematics and their Unit wise marks distribution
Tamil Nadu Board of Secondary Education Class 6 Mathematics Course Structure 2025-26 With Marking Scheme
| # | Unit/Topic | Weightage |
|---|---|---|
| 1 | Term - 1 | |
| 1.1 | Numbers | |
| 1.2 | Introduction to Algebra | |
| 1.3 | Ratio and Proportion | |
| 1.4 | Geometry | |
| 1.5 | Statistics | |
| 1.6 | Information Processing | |
| 2 | Term - 2 | |
| 2.1 | Numbers | |
| 2.2 | Measurements | |
| 2.3 | Bill, Profit and Loss | |
| 2.4 | Geometry | |
| 2.5 | Information Processing | |
| 3 | Term - 3 | |
| 3.1 | Fractions | |
| 3.2 | Integers | |
| 3.3 | Perimeter and Area | |
| 3.4 | Symmetry | |
| 3.5 | Information Processing | |
| Total | - |
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Syllabus
1: Term - 1
Tamil Nadu Board of Secondary Education Class 6 Mathematics Syllabus
1.1 Numbers
- Fundamentals of Numbers
- Successor and Predecessor of Whole Number
- Introduction
- Successor and Predecessor of Whole Number
- Real-Life Applications
- Key Points
- Introducing a 5 Digit Number - 10,000
- Introducing the Six Digit Number - 1,00,000
- Introduction
- Reading and Writing six-digit numbers
- Introducing seven-digit numbers
- Introduction
- Reading and writing seven-digit numbers
- Concept of Place Value
- Definition: Place Value
- Place Value of the Whole Number
- Place Value of a Decimal Number
- Real-Life Applications
- Key Points Summary
- Use of Commas
- Crores
- Introducing crores
- A standard form of large numbers
- Comparing Numbers
- Introduction
- Rules for Comparing Any Two Numbers
- Comparing Numbers Using Charts
- Real-Life Application
- Key Points Summary
- Ascending and Descending Order of Numbers
- Forming Numbers from Digits
- Introduction
- Shifting Digits
- BODMAS Rule
- Introduction
- Order of Operations
- Example 1
- Example 2
- Real-Life Application
- Key Points Summary
- Rounding off a Number
- Introduction
- Rounding Off a Number to the Nearest Ten
- Rounding Off a Number to the Nearest Hundred
- Rounding Off a Number to the Nearest Thousand
- Examples
- Real-Life Application
- Key Rules Summary
- To Estimate Sum Or Difference
- Estimating Products of Numbers
- Whole Numbers
- Definition: Whole Numbers
- Characteristic of Whole Numbers
- Real-life Examples
- Key Points Summary
- Properties of Whole Numbers
1.2 Introduction to Algebra
- Introduction to Algebra
- Introduction
- Variables and Literals
- Common Signs and Symbols
- Understanding Algebraic Language
- Real-Life Application
- Key Points Summary
- Constants and Variables in Mathematics
- Definition: Constants
- Definition: Variables
- Identifying Terms
- Real-Life Application
- Key Points Summary
- Expressions with Variables
- Word Problems on Linear Equations
- Introduction
- Example 1
- Example 2
- Example 3
- Key Points Summary
1.3 Ratio and Proportion
- Ratio
- Definition: Ratio
- Key Concepts in Ratios
- Examples
- Real-Life Application
- Concept of Equivalent Ratios
- Proportion
- Definition: Proportion
- Rules of Proportion
- Example 1
- Example 2
- Example 3
- Example 4
- Real-Life Applications
- Key Points Summary
- Unitary Method
- Definition: Unitary Method
- Steps for Applying the Unitary Method
- Example 1
- Example 2
- Example 3
- Example 4
- Real-Life Examples
- Key Points Summary
1.4 Geometry
- Fundamentals of Geometrical Concepts
- Introduction
- Fundamental Geometrical Concepts
- Concept of Lines
- Definition: Line
- Definition: Concurrent Lines
- Fundamental Properties and Representation of a Line
- Line Segments
- Definition: Line Segment
- Properties and Measurement of a Line Segment
- Activity: Understanding a Line Segment
- Measuring Line Segments
- Rays
- Introduction
- Definition: Ray
- Properties and Representation of a Ray
- Measuring Angles
- Introduction
- Units of Measurement
- Measuring with a Protractor
- Steps to Measure an Angle Using a Protractor
- Activity: Make Your Own Paper Protractor
- Key Points Summary
- Common Errors
- Angles of Special Measures - 30°, 45°, 60°, 90°, and 120°
- Types of Angles
- Introduction
- Types of Angles
- Activity: Exploring a Straight Angle Using Paper Folding
- Key Rotational Benchmarks
- Related Angles
- Points and Lines
- Concept of Angle
- Introduction
- Parts of an Angle
- Naming and Representation of an Angle
- Example
- Real-Life Examples
1.5 Statistics
- Mathematical Data Collection and Organisation
- Introduction
- Definition: Data
- Definition: Raw Data
- Organising Data
- Example 1
- Example 2
- Example 3
- Key Points Summary
- Representation of Data
- Introduction
- Frequency Distribution & Data Arrangement
- Structure of a Frequency Distribution Table
- Example
- Real-life Applications
- Key Points Summary
- Pictographs
- Introduction
- Scale
- Example 1
- Example 2
- Key Points Summary
- Concept of Graph
- Definition: Graph
- Graph Paper
- X-axis and Y-axis
- Use of Scale
- Bar Graphs
- Introduction
- Elements of Bar Graph
- Example 1
- Example 2
- Example 3
- Key Points summary
1.6 Information Processing
- Systematic Listing
- Systematic Completion of Lists
- Sudoku
- Magic triangle
- More figures in a figure
2: Term - 2
Tamil Nadu Board of Secondary Education Class 6 Mathematics Syllabus
2.1 Numbers
- Concept of Even and Odd Number
- Definition: Even and Odd
- Properties of Odd and Even Numbers
- Real-Life Examples
- Key Points Summary
- Prime and Composite Numbers
- Definition: Prime Numbers
- Definition: Twin Prime Numbers
- Definition: Composite Number
- Activity: Prime or Composite? Build and Decide!
- Classification of Numbers Based on Their Factors
- Key Points Summary
- Eratosthenes’ Method of Finding Prime Numbers
- Historical Note
- Step-by-Step Guide to Eratosthenes’ Prime Number Method
- Key Points Summary
- Tests for Divisibility of Numbers
- Introduction
- Divisibility Rules
- Divisibility by 2
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Divisibility by 3
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Divisibility by 5
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Divisibility by 4
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Divisibility by 6
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Divisibility by 8
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Divisibility by 9
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Divisibility by 10
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Divisibility by 11
- Rule
- Step-by-Step Explanation
- Examples
- Real-Life Application
- Key Points Summary
- Prime Factorisation
- Definition: Prime Factor
- Examples
- Prime Factorisation of a Product
- Applications of Prime Factorisation: Checking Co-primeness
- Applications of Prime Factorization: Checking Divisibility
- Factors and Common Factors
- Definition: Factor
- Product and Factor
- Examples of Finding Factors of Numbers
- Properties of Factors
- Definition: Common Factor
- Activity
- Highest Common Factor (HCF)
- Definition: HCF
- Steps to Find HCF
- Example 1
- Example 2
- Key Points Summary
- Multiples and Common Multiples
- Introduction
- Definition: Multiple
- Examples
- Properties of Multiples
- Real-life Application
- Lowest Common Multiple
- Definition: LCM
- Steps to Find the LCM
- Examples
- Relationship between the Numbers and their HCF and LCM
2.2 Measurements
- Conversion of Units
- Fundamental Operations on Quantities with Different Units
- Measures of Time
- Conversion of Time
- Ordinary Time or the 12-Hour Format
- Railway Time or the 24-Hour Format
- Conversion of Time Formats
- Duration between the two given time instances
- Year
2.3 Bill, Profit and Loss
- Bill
- Bill
- Verification of Bill
- Preparation of a Bill
- Basic Concepts of Profit and Loss
2.4 Geometry
- Basic Concepts of Triangles
- Definition:Triangle
- Parts of a Triangle
- Basic Properties of a Triangle
- Key Points Summary
- Classification of Triangles based on Sides
- Introduction
- Classification of Triangles based on Sides
- Key Points Summary
- Classification of Triangles based on Angles
- Introduction
- Classification of Triangles based on Angles
- Key Points Summary
- Basic Properties of a Triangle
- Sum of the three angles of a triangle = 180°
- Sum of any two sides is greater than the third side.
- Activity 1
- Activity 2
- Triangle Inequality
- Drawing a Perpendicular to a Line
- Introduction
- By Folding Paper
- Using a Protractor
- Perpendicular at a Point on the Line (Using a Set Square)
- Perpendicular from a Point Outside the Line (Using a Set Square)
- Perpendicular from a Point on the Line (Using a Compass)
- Perpendicular from a Point Outside the Line (Using a Compass)
- Key Points Summary
- Construction of an Angle
- Construction of Parallel Lines
2.5 Information Processing
- Tree Diagram
- Conversion of Tree Diagrams into Numerical Expressions
- Conversion of Algebraic Expressions into Tree Diagrams
3: Term - 3
Tamil Nadu Board of Secondary Education Class 6 Mathematics Syllabus
3.1 Fractions
- Concept of Fraction
- Definition: Fraction
- Structure of Fraction
- Understanding Parts of a Whole with Fractions
- Real-Life Applications
- Key Points Summary
- Types of Fractions
- Concept of Equivalent Fractions
- Definition: Equivalent Fractions
- Definition: Cross Product
- Obtaining Equivalent Fractions
- Examples
- Real-Life Application
- Key Points Summary
- Concept of Mixed Fractions
- Definition: Mixed Fraction
- Structure of Mixed Fractions
- Example 1
- Example 2
- Example 3
- Real-Life Application
- Key Points Summary
- Concept of Proper and Improper Fractions
- Definition: Proper Fraction
- Definition: Improper Fraction
- Key Points Summary
- Concept of Equivalent Fractions
- Comparing Fractions
- Introduction
- Case 1: Comparing Like Fractions
- Case 2: Comparing Unlike Fractions
- Case 3: Comparing Unlike Fractions with the Same Numerators
- Example 1
- Example 2
- Key Points Summary
- Addition of Fraction
- Introduction
- Steps for Adding Fractions
- Case 1: Proper Fraction + Proper Fraction
- Case 2: Improper Fraction + Improper Fraction
- Case 3: Mixed Fraction + Mixed Fraction
- Brahmagupta’s Method for Adding Fractions (Adding Unlike Fractions)
- Example 1
- Example 2
- Example 3
- Key Points Summary
- Subtraction of Fraction
- Introduction
- Steps for Subtracting Fractions
- Case 1: Proper Fraction – Proper Fraction
- Case 2: Improper Fraction – Improper Fraction
- Case 3: Mixed Fraction – Mixed Fraction
- Real-Life Application
- Key Points Summary
- Using Operator 'Of' with Multiplication and Division
- Introduction
- Understanding Fractions as Multiplication ('of')
- Example 1
- Example 2
- Real-Life Application
- Key Points Summary
- Multiplication of Fraction
- Introduction
- Formula
- Steps to Multiply Fractions
- Examples
- Key Points Summary
- Division of Fractions
- Introduction
- Formula
- Definition: Fraction, Division and Reciprocal
- Example
- Key Points Summary
3.2 Integers
- Integers
- Definition: Integers
- Introduction to Integers and Their Representation
- Understanding the Collection of Integers through Sets
- Real-Life Application
- Key Points Summary
- Representation of Integers on the Number Line
- Additive Inverse
- Ordering of Integers
- Introduction
- Properties of Integer Ordering
- Examples 1
- Examples 2
3.3 Perimeter and Area
- Concept of Perimeter
- Introduction
- Formula: Perimeter
- Units of Perimeter
- Example 1
- Example 2
- Key Points Summary
- Perimeter of a Rectangle
- Introduction
- Formula : Perimeter of a Rectangle
- Example 1
- Example 2
- Example 3
- Key Points Summary
- Perimeter of Squares
- Introduction
- Formula: Perimeter of Squares
- Example 1
- Example 2
- Key Points Summary
- Perimeter of Triangle
- Concept of Area
- Introduction
- Formula: Area
- The Standard Unit of Area
- Example
- Area of Rectangle
- Introduction
- Formula: Area of a Rectangle
- Example 1
- Example 2
- Key Points Summary
- Area of Square
- Introduction
- Formula: Area of a Square
- Example 1
- Example 2
- Key Points Summary
- Area of a Triangle
- Perimeter and Area of Combined Shapes
- Impact on Removing / Adding a portion from / to a given shape
- Estimate the Area of Irregular Shape Using a Graph Paper
3.4 Symmetry
- Concept of Symmetry
- Introduction
- Definition: Symmetry
- Definition: Line of Symmetry
- Activity 1
- Activity 2
- Key Points Summary
- Lines of Symmetry for Regular Polygons
- Reflection Symmetry (Mirror Symmetry)
- Definition: Reflectional Symmetry
- Axis of Symmetry
- Examples
- Concept of Rotational Symmetry
- Translational Symmetry
3.5 Information Processing
- Iterative Processes
- Iterative Process in Numbers
- Fibonacci numbers in nature
- Euclid’s Game
- Euclid’s Division Algorithm
- Arranging Things and Putting Them in Order
