## Revision Notes for Class 8 Maths

Class 8 Maths Revision Notes are very helpful for every students as it will help you in knowing the important topics of chapters.

**Revision Notes for Class 8 Maths**provided here are prepared by Studyrankers experts who have given every detail of the chapter which are important for developing student's skill. It will come handy if you have less time and want to complete the chapter. This will provide you with in depth knowledge of topics so you can understand them easily.**Class 8 Maths Revision Notes**is prepared chapterwise so anyone looking for specific chapter can find it in no time and utilize them for their benefits.### Chapterwise Revision Notes for Class 8 Maths

- Revision Notes Chapter 1 - Rational Numbers
- Revision Notes for Chapter 2 - Linear Equations in One Variable
- Revision Notes for Chapter 3 - Understanding Quadrilaterals
- Revision Notes for Chapter 4 - Practical Geometry
- Revision Notes for Chapter 5 - Data Handling
- Revision Notes for Chapter 6 - Square and Square Roots
- Revision Notes for Chapter 7 - Cube and Cube Roots
- Revision Notes for Chapter 8 - Comparing Quantities
- Revision Notes for Chapter 9 - Algebraic Expressions and Identities
- Revision Notes for Chapter 10 - Visualizing Solid Shapes
- Revision Notes for Chapter 11 - Mensuration
- Revision Notes for Chapter 12 - Exponents and Powers
- Revision Notes for Chapter 13 - Direct and Inverse Proportions
- Revision Notes for Chapter 14 - Factorization
- Revision Notes for Chapter 15 - Introduction to Graphs
- Revision Notes for Chapter 16 - Playing with Numbers

Studyrankers has not only providing NCERT Solutions for Class 8 Maths but also committed to provide in depth materials of every subjects so anyone out there want to complete their studies or improve their knowledge. If you read a chapter and are having trouble understanding a point, you can still clear these doubts by taking help of these CBSE notes for Class 8 Maths. Through them, anyone will get a lot of help in exams. We have tried to keep the concepts easy so that no one has trouble understanding.

These NCERT Revision Notes for Class 8 Maths are as per the latest syllabus of CBSE 2020-21. It will guide how to do better in the exams and also prepare for higher classes.

Chapter 1 - Rational Numbers

Revision Notes for Chapter 1 Class 8 Maths has many topics such as closure, commutativity, associativity properties of rational numbers, representation of rational n umbers on the number line and rational numbers between two rational numbers.

Chapter 2 - Linear Equations in One Variable

There are variety of important topics that have been discussed in this chapter such as linear expression in one variable, solving equations having variable on both sides, application of linear equations and reducing equations to simpler form.

Chapter 3 - Understanding Quadrilaterals

We will understand about classification of polygons. Polygons can be classified as a triangle (3 sides), quadrilateral (4 sides), pentagon (5 sides), hexagon (6 sides) and many more. We will also talk about properties of quadrilaterals like parallelograms, rhombus, rectangle, etc.

Chapter 4 - Practical Geometry

This chapter is about the construction of specific quadrilateral. A quadrilateral can be constructed when-

Four sides and one diagonal are given

Two diagonals and three sides are given

Two adjacent sides and three angles are given

Three sides and two included angles are given

When other special properties are known.

Chapter 5 - Data Handling

Chapter 5 Class 8 Maths Revision Notes is about organizing a data and grouping a data. Also, we will basic details about Probability whose important formula is Probability of an event (P) = Number of outcomes that make an event/ Total number of outcomes of the experiment.

Chapter 6 - Squares and Square Roots

We are going to discuss about properties of square numbers, finding the square of a number, square roots, finding square root by division method, square roots of decimals.

Chapter 7 - Cubes and Cube Roots

This chapter deals with the cubes, cube root through prime factorisation method and cube root of a cube number.

Chapter 8 - Comparing Quantities

Class 8 Revision Notes of Maths Chapter 8 deals with various concepts which will become important in higher classes so you muts understand these topics. The topics are ratios and percentages, finding the increase or decrease percent, finding discounts, sales tax or Goods and Services Tax, compound Interest, applications of Compound Interest Formula.

Chapter 9 - Algebraic Expressions and Identities

First we will start studying by knowing about monomials, binomials and polynomials. After that we will study addition, subtraction and multiplicationof algebraic expressions. Then after we will know about identites.

Chapter 10 - Visualising Solid Shapes

In this chapter, we are focused on three dimensional shapes and learn about Euler's formula that is: F + V - E = 2, where

‘F’ stands for the number of faces

‘V’ stands for the number of vertices

‘E’ stands for the number of edges.

Chapter 11 - Mensuration

Chapter 11 Revision Notes for Class 8 Maths deals about the area and perimeter of Rectangle, Square, Triangle, Parallelogram, Circle, Trapezium, Polygon and Quadrilateral and also volume of Cube, Cuboid and Cylinder.

Chapter 12 - Exponents and Powers

This chapter includes topics such as powers with negative exponents, laws of exponents, use of exponents to express the numbers in standard form.

Chapter 13 - Direct and Inverse Proportions

Two quantities are proportional if as one of them changes, the other one also changes accordingly. Two variables x and y are said to be in inverse proportion, when x increases y decreases and vice-versa.

Chapter 14 - Factorisation

Factorisation process is the reverse of multiplication. We will study about four different methods of factorisation such as method of common factors, regrouping terms, using identities, factors of the form (x + a) (x + b). Also we will study division of a polynomial by a monomial.

Chapter 15 - Introduction to Graphs

We will study different types of graphs such as bar graphs, pie graphs, histogram, line graphs and linear graphs and also application of graphs.

Chapter 16 - Playing With Numbers

There are variety of topics in this chapter but the most important one is justifying tests of divisibility.

Area of Trapezium = ½ x (Sum of the length of parallel sides) x Distance between them

2. Area of Rhombus = ½ x Product of its diagonals

3. Total Surface Area of a Cuboid = 2(lb + bh + hl)

4. Total Surface Area of a Cube = 6l2

5. Total Surface Area of a Cylinder = 2Ï€r (r + h)

6. Volume of a Cuboid = l x b x h

Chapter 1 - Rational Numbers

Revision Notes for Chapter 1 Class 8 Maths has many topics such as closure, commutativity, associativity properties of rational numbers, representation of rational n umbers on the number line and rational numbers between two rational numbers.

Chapter 2 - Linear Equations in One Variable

There are variety of important topics that have been discussed in this chapter such as linear expression in one variable, solving equations having variable on both sides, application of linear equations and reducing equations to simpler form.

Chapter 3 - Understanding Quadrilaterals

We will understand about classification of polygons. Polygons can be classified as a triangle (3 sides), quadrilateral (4 sides), pentagon (5 sides), hexagon (6 sides) and many more. We will also talk about properties of quadrilaterals like parallelograms, rhombus, rectangle, etc.

Chapter 4 - Practical Geometry

This chapter is about the construction of specific quadrilateral. A quadrilateral can be constructed when-

Four sides and one diagonal are given

Two diagonals and three sides are given

Two adjacent sides and three angles are given

Three sides and two included angles are given

When other special properties are known.

Chapter 5 - Data Handling

Chapter 5 Class 8 Maths Revision Notes is about organizing a data and grouping a data. Also, we will basic details about Probability whose important formula is Probability of an event (P) = Number of outcomes that make an event/ Total number of outcomes of the experiment.

Chapter 6 - Squares and Square Roots

We are going to discuss about properties of square numbers, finding the square of a number, square roots, finding square root by division method, square roots of decimals.

Chapter 7 - Cubes and Cube Roots

This chapter deals with the cubes, cube root through prime factorisation method and cube root of a cube number.

Chapter 8 - Comparing Quantities

Class 8 Revision Notes of Maths Chapter 8 deals with various concepts which will become important in higher classes so you muts understand these topics. The topics are ratios and percentages, finding the increase or decrease percent, finding discounts, sales tax or Goods and Services Tax, compound Interest, applications of Compound Interest Formula.

Chapter 9 - Algebraic Expressions and Identities

First we will start studying by knowing about monomials, binomials and polynomials. After that we will study addition, subtraction and multiplicationof algebraic expressions. Then after we will know about identites.

Chapter 10 - Visualising Solid Shapes

In this chapter, we are focused on three dimensional shapes and learn about Euler's formula that is: F + V - E = 2, where

‘F’ stands for the number of faces

‘V’ stands for the number of vertices

‘E’ stands for the number of edges.

Chapter 11 - Mensuration

Chapter 11 Revision Notes for Class 8 Maths deals about the area and perimeter of Rectangle, Square, Triangle, Parallelogram, Circle, Trapezium, Polygon and Quadrilateral and also volume of Cube, Cuboid and Cylinder.

Chapter 12 - Exponents and Powers

This chapter includes topics such as powers with negative exponents, laws of exponents, use of exponents to express the numbers in standard form.

Chapter 13 - Direct and Inverse Proportions

Two quantities are proportional if as one of them changes, the other one also changes accordingly. Two variables x and y are said to be in inverse proportion, when x increases y decreases and vice-versa.

Chapter 14 - Factorisation

Factorisation process is the reverse of multiplication. We will study about four different methods of factorisation such as method of common factors, regrouping terms, using identities, factors of the form (x + a) (x + b). Also we will study division of a polynomial by a monomial.

Chapter 15 - Introduction to Graphs

We will study different types of graphs such as bar graphs, pie graphs, histogram, line graphs and linear graphs and also application of graphs.

Chapter 16 - Playing With Numbers

There are variety of topics in this chapter but the most important one is justifying tests of divisibility.

#### Why are some important formulas of Chapter Mesnuration

Area of Trapezium = ½ x (Sum of the length of parallel sides) x Distance between them

2. Area of Rhombus = ½ x Product of its diagonals

3. Total Surface Area of a Cuboid = 2(lb + bh + hl)

4. Total Surface Area of a Cube = 6l2

5. Total Surface Area of a Cylinder = 2Ï€r (r + h)

6. Volume of a Cuboid = l x b x h

#### Are Revision Notes for Class 8 Maths useful?

Yes, Class 8 Maths Revision Notes are very useful for every students if you have less time or want to revise important topics before examination. It will ease you preparation a lot by providing you in depth study material of a chapter.

#### Can I score high marks by studying Revision Notes for class 8 Maths?

Yes, it will be help you in scoring good marks in the examination as it will make you aware of all the topics so it by which many of your problems will be solved and you will be able to give exams easily and understand the questions paper pattern.

#### How to download Class 8 Maths Revision Notes as PDF?

We have provided Maths Class 8 Revision Notes also as PDF which is free so you can study at your comfortability in your own anytime without any internet connection.