CBSE Class 8 Maths Solutions 2022-23 | Orchids
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CBSE Class 8 Maths Syllabus

Students of class 8 CBSE do not need to wait until the start of their academic session to learn about the themes in the Maths curriculum for the term 2022-23. Instead, they can review the CBSE Class 8 Maths syllabus and begin studying from the NCERT textbooks. We have supplied the CBSE syllabus for Class 8 Maths for the academic year 2022-2023 to assist students in their studies and plan their study ahead of time. The CBSE Class 8 Maths Syllabus will assist them in keeping track of all of the topics they have learned thus far.

Download CBSE Syllabus for Class 8 Maths for term 2022-23

The CBSE Class 8 Maths Syllabus covers the following major topics.

Number System (50 hrs)

(i) Rational Numbers:

  • Properties of rational numbers (including identities). Using general form of expression to describe properties
  • Consolidation of operations on rational numbers.
  • Representation of rational numbers on the number line.
  • Between any two rational numbers there lies another rational number (Making children see that if we take two rational numbers then unlike for whole numbers, in this case you can keep finding more and more numbers that lie between them).
  • Word problem (higher logic, two operations, including ideas like area).

(ii) Powers

  • Integers as exponents.
  • Laws of exponents with integral powers

(iii) Squares, Square roots, Cubes, Cube roots

  • Square and Square roots.
  • Square roots using factor method and division method for numbers containing (a) no more than total 4 digits and (b) no more than 2 decimal places.
  • Cubes and cubes roots (only factor method for numbers containing at most 3 digits)
  • Estimating square roots and cube roots. Learning the process of moving nearer to the required number.

(iv) Playing with numbers

  • Writing and understanding a 2 and 3 digit number in generalized form (100a + 10b + c, where a, b, c can be only digit 0-9) and engaging with various puzzles concerning this. (Like finding the missing numerals represented by alphabets in sums involving any of the four operations.) Children to solve and create problems and puzzles.
  • Number puzzles and games
  • Deducing the divisibility test rules of 2, 3, 5, 9, 10 for a two or three-digit number expressed in the general form.

Algebra (20 hrs)

(i) Algebraic Expressions

  • Multiplication and division of algebraic exp (Coefficient should be integers).
  • Some common errors (e.g. 2 + x ≠ 2x, 7x + y ≠ 7xy).
  • Identities (a ± b)2 = a2 ± 2ab + b2, a2 - b2 = (a - b) (a + b). Factorisation (simple cases only) as examples the following types a(x + y), (x ± y)2, a2 – b2,(x + a)×(x + b).
  • Solving linear equations in one variable in contextual problems involving multiplication and division (word problems) (avoid complex coefficient in the equations).

Ratio and Proportion (25 hrs)

  • Slightly advanced problems involving applications on percentages, profit & loss, overhead expenses, Discount, tax.
  • Difference between simple and compound interest (compounded yearly up to 3 years or half-yearly up to 3 steps only), Arriving at the formula for compound interest through patterns and using it for simple problems.
  • Direct variation - Simple and direct word problems
  • Inverse variation - Simple and direct word problems
  • Time & work problems - Simple and direct word problems

Geometry (40 hrs)

i) Understanding shapes:

  • Properties of quadrilaterals - Sum of angles of a quadrilateral is equal to 3600 (By verification)
Properties of parallelogram (By verification)
  1. Opposite sides of a parallelogram are equal,
  2. Opposite angles of a parallelogram are equal,
  3. Diagonals of a parallelogram bisect each other. [Why (d), (e) and (f) follow from (b)]
  4. Diagonals of a rectangle are equal and bisect each other.
  5. Diagonals of a rhombus bisect each other at right angles.
  6. Diagonals of a square are equal and bisect each other at right angles.

ii) Representing 3-D in 2-D 

  • Identify and Match pictures with objects [more complicated e.g. nested, joint 2-D and 3- D shapes (not more than 2)].
  • Drawing 2-D representation of 3-D objects (Continued and extended)
  • Counting vertices, edges & faces & verifying Euler’s relation for 3-D figures with flat faces (cubes, cuboids, tetrahedrons, prisms and pyramids)

iii) Construction:

Construction of Quadrilaterals:

  • Given four sides and one diagonal
  • Three sides and two diagonals
  • Three sides and two included angles
  • Two adjacent sides and three angles

Mensuration (15 hrs)

  • Area of a trapezium and a polygon.
  • Concept of volume, measurement of volume using a basic unit, volume of a cube, cuboid and cylinder
  • Volume and capacity (measurement of capacity)
  • Surface area of a cube, cuboid, cylinder.

Data handling (15 hrs)

  • Reading bar-graphs, ungrouped data, arranging it into groups, representation of grouped data through bar-graphs, constructing and interpreting bar-graphs
  • Simple Pie charts with reasonable data numbers.
  • Consolidating and generalising the notion of chance in events like tossing coins, dice etc. Relating it to chance in life events. Visual representation of frequency outcomes of repeated throws of the same kind of coins or dice. Throwing a large number of identical dice/coins together and aggregating the result of the throws to get large number of individual events. Observing the aggregating numbers over a large number of repeated events. Comparing with the data for a coin. Observing strings of throws, notion of randomness.

Introduction to graphs (15 hrs) 


(i) Axes (Same units), Cartesian Plane

(ii) Plotting points for different kind of situations (perimeter vs length for squares, area as a function of side of a square, plotting of multiples of different numbers, simple interest vs number of years etc.)

(iii) Reading off from the graphs

  • Reading of linear graphs
  • Reading of distance vs time graph

CBSE Class 8 Maths Syllabus Chapters Names


Chapter 1: Rational Numbers

1.1 Introduction
1.2 Properties of Rational Numbers
1.3 Representation of Rational Numbers on the Number Line
1.4 Rational Number between Two Rational Numbers

Chapter 2: Linear Equations in One Variable

2.1 Introduction
2.2 Solving Equations which have Linear Expressions on one Side and Numbers on the other Side
2.3 Some Applications
2.4 Solving Equations having the Variable on both sides
2.5 Some More Applications
2.6 Reducing Equations to Simpler Form
2.7 Equations Reducible to the Linear Form

Chapter 3: Understanding Quadrilaterals

3.1 Introduction
3.2 Polygons
3.3 Some of the Measures of the Exterior Angles of a Polygon
3.4 Kinds of Quadrilaterals
3.5 Some Special Parallelograms

Chapter 4: Practical Geometry

4.1 Introduction
4.2 Constructing a Quadrilateral
4.3 Some Special Cases

Chapter 5: Data Handling

5.1 Looking for Information
5.2 Organising Data
5.3 Grouping Data
5.4 Circle Graph or Pie Chart
5.5 Chance and Probability

Chapter 6: Squares and Square Roots

6.1 Introduction
6.2 Properties of Square Numbers
6.3 Some More Interesting Patterns
6.4 Finding the Square of a Number
6.5 Square Roots
6.6 Square Roots of Decimals
6.7 Estimating Square Root

Chapter 7: Cubes and Cube Roots

7.1 Introduction
7.2 Cubes
7.3 Cubes Roots

Chapter 8: Comparing Quantities

8.1 Recalling Ratios and Percentages
8.2 Finding the Increase and Decrease Percent
8.3 Finding Discounts
8.4 Prices Related to Buying and Selling (Profit and Loss)
8.5 Sales Tax/Value Added Tax/Goods and Services Tax
8.6 Compound Interest
8.7 Deducing a Formula for Compound Interest
8.8 Rate Compounded Annually or Half Yearly (Semi Annually)
8.9 Applications of Compound Interest Formula

Chapter 9: Algebraic Expressions and Identities

9.1 What are Expressions?
9.2 Terms, Factors and Coefficients
9.3 Monomials, Binomials and Polynomials
9.4 Like and Unlike Terms
9.5 Addition and Subtraction of Algebraic Expressions
9.6 Multiplication of Algebraic Expressions: Introduction
9.7 Multiplying a Monomial by a Monomial
9.8 Multiplying a Monomial by a Polynomial
9.9 Multiplying a Polynomial by a Polynomial
9.10 What is an Identity?
9.11 Standard Identities
9.12 Applying Identities

Chapter 10: Visualising Solid Shapes

10.1 Introduction
10.2 View of 3D-Shapes
10.3 Mapping Space Around Us
10.4 Faces, Edges and Vertices

Chapter 11: Mensuration

11.1 Introduction
11.2 Let us Recall
11.3 Area of Trapezium
11.4 Area of General Quadrilateral
11.5 Area of Polygons
11.6 Solid Shapes
11.7 Surface Area of Cube, Cuboid and Cylinder
11.8 Volume of Cube, Cuboid and Cylinder
11.9 Volume and Capacity

Chapter 12: Exponents and Powers

12.1 Introduction
12.2 Powers with Negative Exponents
12.3 Laws of Exponents
12.4 Use of Exponents to Express Small Numbers in Standard Form

Chapter 13: Direct and Inverse Proportions

13.1 Introduction
13.2 Direct Proportion
13.3 Inverse Proportion

Chapter 14: Factorisation

14.1 Introduction
14.2 What is Factorisation?
14.3 Division of Algebraic Expressions
14.4 Division of Algebraic Expressions Continued (Polynomial/ Polynomial) 
14.5 Can you Find the Error?

Chapter 15: Introduction to Graphs

15.1 Introduction
15.2 Linear Graphs
15.3 Some Applications

Chapter 16: Playing with Numbers

16.1 Introduction
16.2 Numbers in General Form
16.3 Game with Numbers
16.4 Letters for Digits
16.5 Test of Divisibility