CBSE Class 8 Maths Revision Notes

Introduction to CBSE Exam:

CBSE is a national-level education board for private and public schools. The CBSE syllabus is focused on both curricular and co-curricular activities. There are approximately 25,000 schools in India and more than 250 schools spread across 28 International countries. Many competitive entrance examinations are based on the CBSE recommended curriculum, making it easier for the students belonging to the CBSE board to crack the examination. CBSE aims to provide high-quality child-focused academic methods for the overall development of students. 

CBSE Class 8 Mathematics Notes

Mathematics is regarded as one of the most important yet difficult subjects to crack. It is very prominent as it plays an important role in shaping the students’ future. Mathematics is a subject that requires logical thinking, analytical skills, and problem-solving skills. To master the subject, students have to work very hard by practising the questions and revising formulae , etc., regularly. 

From Class 8, students learn more complex topics. The difficulty level of every subject starts increasing as Class 8 lays the foundation for the 9th and 10th standards. Therefore it is imperative that students develop and get their basics right. 

In Class 8, Mathematics is easy, provided students practise regularly. Failing to do so might become difficult for students to cope with the complex concepts introduced in higher classes and cause inconsistency. Therefore, students must know their basics well to increase the chances of scoring high marks in the Class 8 Mathematics examination. In addition, they should develop a habit to solve extra questions apart from the NCERT books. This is where the CBSE Class 8 Mathematics notes come into the picture. 

The 8th class mathematics notes include the 16 chapters based on the latest guidelines issued by the NCERT syllabus. Topics based on Algebra like Rational numbers, linear equations, square roots, cube roots, Algebraic Expressions, Identities, etc., are included. In addition, students learn about practical geometry and statistics like graphs and data handling. For improved outcomes and higher scores, students must make sure they clear all their doubts to better understand all topics included in the CBSE Class 8 Mathematics notes. 

CBSE Class 8 Mathematics Notes for Quick Revision

The CBSE Class 8 Mathematics notes provide well explained and comprehensive solutions to all questions. The 8th class Mathematics Notes contain chapter-based solutions to help students clear their doubts. It provides a deep understanding of all complex concepts included in the textbook. With the help of  CBSE Class 8 Mathematics Notes, students can solve different types of questions in the book. They can also practice questions that are more likely to be asked in the test. Students are encouraged and advised to practice additional CBSE questions as well. The CBSE Class 8 Mathematics notes are a valuable reference tool which save time and provide quick revision. 

If students encounter doubts or find difficulty understanding a concept, they can use the CBSE Class 8 Mathematics notes. The questions test the theoretical and practical based knowledge of students. To improve the result and get a better score in mathematics class 8, students need to understand each concept and apply it in their daily lives. Students can use the CBSE Class 8 Mathematics Notes to understand the full syllabus and study for the exams effectively. In addition, students can use these notes to write down all the formulae, shortcut methods, tips, and tricks chapter-wise in one place to refer to and memorise them whenever they want.

Chapter-wise CBSE 8th Standard Mathematics Notes

If students find it difficult to understand a concept, they can clear their doubts with the help of CBSE class 8 mathematics notes. The notes are based on the latest guidelines issued by the CSBE for 2021-22. It will guide and assist students in their exam preparation. 

The following chapters are included in the CBSE Class 8 Mathematics notes provided by Extramarks.

Chapter 1: Rational Numbers

The CBSE revision notes explain all topics included in the rational Numbers chapter thoroughly. Students will learn about numbers and their properties and further use this knowledge to solve several sums. The CBSE class 8 mathematics notes are also equipped with graphs and diagrams. 

• Rational Numbers and their properties
• Representation of rational numbers on the number line
• Rational Numbers Between Two Rational Numbers
• Reducing Equations to Simpler Form

Chapter 2: Linear Equations in One Variable

The book’s second chapter deals with the linear equations in one variable and their applications to solve various problems. Again, the mathematics 8th standard notes give a clear insight into this chapter. 

• Solve Linear Equations with Variable on Both Sides
• Applications 
• Reducing Equations to Simpler Form

Chapter 3: Understanding Quadrilaterals

This chapter gives a clear insight into different polygons such as triangles, rectangles, pentagon hexagons, etc. In addition, properties of various quadrilaterals like square, rectangle, parallelogram, trapezium, kite, rhombus are mentioned in detail in the CBSE Class 8 Mathematics notes. 

• Polygons and their types
• Exterior and Interior Angles of a Polygon
• Properties of special quadrilaterals

Chapter 4: Practical Geometry

The Practical geometry chapter in class 8 Mathematics notes talks about the construction of specific quadrilaterals using geometrical instruments based on different known parameters. 

• Construction of a Quadrilateral
• Special properties

Chapter 5: Data Handling

In the CBSE class 8 Mathematics notes, the data handling chapter is based on students’ previous knowledge. It is about organising and grouping data in the form of graphs and charts. Basic information about probability is also included in the chapter. 

• Data Handling
• Organising Data
• Grouping Data
• Pie Chart
• Chance and Probability

Chapter 6: Squares and Square Roots

The chapter talks about squares and square roots and different methods of finding the square of a number. 

• Squares and Square Roots
• Division method
• Square of Decimal numbers

Chapter 7: Cubes and Cube roots

This chapter is explained in detail in the Extramarks CBSE class 8 Mathematics notes. It deals with different methods to find the cube and cube roots of a number. Students can decipher the different applications of this concept in all other chapters in mathematics 8th standard notes. 

• Cubes and Cube Roots
• Prime factorisation method
• Cubes of decimal numbers

Chapter 8: Comparing Quantities

This chapter discusses daily life applications of Mathematics. It deals with the fundamental idea of various quantities and their comparison. 

• Ratios and Percentages
• Percent Change and Discounts 
• Profit and Loss
• Compound Interest
• Sales Tax, Value Added Tax, and Goods and Services Tax 

Chapter 9: Algebraic Expressions and Identities

The chapter gives basic information about algebraic expressions in the CBSE class 8 Mathematics notes. It further provides information about the identities. Students have to solve sums based on sum mathematical operations like addition, subtraction, squares, and products. 

• Algebraic expressions
• Like and Unlike Algebraic Terms
• Mathematical Operations on Algebraic Expressions
• Types of Polynomials
• Multiplying Polynomials
• Standard Algebraic Identities

Chapter 10: Visualising Solid Shapes

This chapter helps students to learn to visualise solid shapes in three dimensions. Different properties used to describe the shapes and Euler’s formula are included in the CBSE Class 8 Mathematics notes. 

• Visualising Solid Shapes
• Mapping Space Around Us
• Euler’s formula

Chapter 11: Mensuration

This chapter is one of the important chapters in the 8th standard Mathematics notes. Students will learn to determine the area, perimeter, volume, and other aspects of different geometric figures.

• Area of Trapezium
• Area of Polygons
• Area of General Quadrilateral
• Surface Area of Cube, Cuboid, and Cylinder
• The volume of Cube, Cuboid, and Cylinder
• Volume and Capacity

Chapter 12: Exponents and Powers

For students to understand the chapter clearly, shortcut techniques have been included in the CBSE Class 8 mathematics notes. The chapter covers the primary concepts like laws of exponents and their applications. 

• Negative Exponents
• Laws of Exponents 
• Expressing Small Numbers in Standard Form

Chapter 13: Direct and Inverse Proportions

A detailed explanation of this chapter with several numerical is mentioned in the CBSE Class 8 Mathematics notes. Students will also have to use the basic knowledge of 

• Direct and Inverse Proportions 
• Word problems

Chapter 14: Factorisation

In this chapter, students will learn about numeric and algebraic factors and their properties and functions. The CBSE Class 8 Mathematics notes give a comprehensive idea of all topics included in this chapter.

• Introduction to factorisation
• Division of Algebraic Expressions
• Regrouping terms
• Using identities

Chapter 15: Introduction to Graphs

A basic understanding of graphs and different kinds of graphs is mentioned in this chapter. It provides an emphasis on the construction of graphs and their applications.

• Introduction to Graphs
• Linear Graphs
• Application of Graphs

Chapter 16: Playing with Numbers

The last chapter of the book in the CBSE class 8 Mathematics notes helps students get a precise understanding of various kinds of numbers and how they are expressed using general forms. 

• Game of Numbers
• Letters for Digits
• Divisibility Rules
• Playing with Numbers

Students may click on the topic to access the Extramarks CBSE class 8 Mathematics notes for the respective chapter.

Benefits of CBSE Class 8 Mathematics Notes

The CBSE Class 8 Mathematics notes are a must-have study material for all students. They are very effective for quick and last-minute revision. The notes include all graphs, charts, and coloured illustrations to make learning effective. With pictorial explanation, the usage of class 8 Mathematics notes becomes easier. The notes are bifurcated and categorised according to the chapters included in the NCERT books to gain maximum understanding. Each topic is explained in a detailed manner. The CBSE Class 8 Mathematics Notes help students know the important topics that are most likely to be asked in the exams. 

The notes aim to reduce stress and burden upon students. Therefore, they can easily cover the entire CBSE syllabus in minimal time. Students can also use these notes to complete their assignments as the CBSE Class 8 Mathematics Notes are based on the revised guidelines by the Board of Education. Students can access these notes through any device such as a mobile, tablet, laptop, etc. 

The CBSE Class 8 Mathematics Notes enable self-study because of the detailed and easy-to-understand language. By using these mathematics notes on a daily basis, students will notice an improvement in their results. With the help of these notes, students will learn how to approach a particular problem. This increases their confidence. Using the notes to study will also decrease the chance of silly mistakes. 

CBSE Class 8 Mathematics Notes Features

The key features of the CBSE Class 8 Mathematics notes provided by Extramarks include

• Every minute detail in the notes is based on the Central Board of Education (CBSE) revised syllabus.
• Detailed explanation has been provided for each question and all the solutions have been presented in an easy to understand manner. 
• These notes cover the additional topic and CBSE extra questions from the NCERT Book. 
• The CBSE Class 8 Mathematics Notes prepares students for school examinations and Mathematics Olympiads examination from regional to international levels. 
• The notes are organised based on the chapters in a page-wise format to help students get solutions quickly. 
• Mathematics solutions, formulae, theorems, and equations can be revised with maximum accuracy.
• Students of Class 9 can also use these CBSE Class 8 Mathematics notes to brush up on their basics before learning the complex concepts. 
• These notes are a great reference tool that will save students’ time and enable them to excel in their examinations. 

Students may access the CBSE Class 8 Mathematics notes for free by registering on Extramarks.

How Extramarks Can Help Students for Class 8 Mathematics?

Extramarks, an online platform, aims to provide the CBSE Class 8 Mathematics Notes to the maximum number of students. With the help of these notes, students can save ample time, which is otherwise wasted in referring to textbooks and preparing notes. The experts at Extramarks have lucidly designed the notes so that students can easily understand each and every concept. 

The CBSE Class 8 Mathematics notes are available on the website or mobile app. The detailed explanations, step-by-step Mathematics problems, graphs, and diagrams help students easily study the subject easily. In addition, the notes are self-explanatory and include different types of questions. 

All the experts and professionals at Extramarks have attempted their best to add numerous extra questions of all difficulty levels. These CBSE Class 8 Mathematics notes assist the students in excelling in their school examination and national level entrance exams. In addition, it aims to lay the right foundation of Mathematics to do better in higher classes.

These CBSE Class 8 mathematics notes will assist students with all kinds of doubts and issues that they would possibly come across. Students can also practice the CBSE sample papers and CBSE previous year question papers on the Extramarks platform.