# CBSE Class 8th Maths Syllabus 2017-2018 Session

** CBSE Class 8th Maths Syllabus:** Hi friends, today we are going to discuss you about the latest Syllabus of Class 8th Math. As you know very well that Central Board of Secondary Education (CBSE) has its own curriculum and syllabus designed for the students and they hold the supreme authority to change it further for the benefit of students. So it’s always a wise decision to keep an eye on what happening around with the subject you are going to learn. This year CBSE made little bit changes in the class 8th syllabus.

**Books for class 8 Math:**

- Mathematics Publication: – NCERT
- R.S.Agarwal Bharti Bhawan (Reference Book)

Overview of CBSE Class 8th Maths Syllabus, Chapter wise maths syllabus for class 8, Class 8th maths syllabus for session 2017-2018.

Topics to be Covered | Time Allotted (In Hour) |

Number System1. Rational Numbers 2. Exponents and Power 3. Square and square roots 4. Cubes and cube Roots 5. Playing with Numbers | 50 hrs |

Algebra 1. Algebraic expression 2. Linear equation 3. Factorization | 20 hrs |

Ratio and Proportion1. Percentage and Profit & loss 2. Simple Compound Interest 3. Direct & Indirect Variation, word Problem | 25 hrs |

Geometry 1. Visualizing solid shapes2. Understanding quadrilateral 3. Representing 3-D in 2-D 4. Construction | 40 hrs |

Mensuration | 15 hrs |

Data handling | 15 hrs |

Introduction to graphs | 15 hrs |

## ‘CBSE class 8th maths syllabus’ chapter details in brief

**(A) Number System (50 hrs)**

**(i) Rational Numbers:**

- Properties of rational numbers.(including identities). Using a 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) Exponents and Power:**

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

**(iii) Square and square 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.

**(iv) Cubes and cube Roots:**

- 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.

**(B) 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 )

**(ii) Linear equation:**

- Solving linear equations in one variable in contextual problems involving multiplication and division (word problems) (avoid complex coefficient in the equations)

**(iii) Factorization:**

- Identities (a ± b)2 = a2 ± 2ab + b2, a2 – b2 = (a – b) (a + b)
- Factorization (simple cases only) as examples the following types a(x + y), (x ± y)2, a2 – b2, (x + a).(x + b)

**(C) Ratio and Proportion (25 hrs)**

(i) **Percentage and Profit & loss:**

- Slightly advanced problems involving applications on percentages, profit & loss, overhead expenses, Discount, tax.

**(ii) Simple Compound Interest: **

- 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.

**(iii) Direct & Indirect Variation, word Problem:**

- Direct variation – Simple and direct word problems
- Inverse variation – Simple and direct word problems
- Time & work problems– Simple and direct word problems

**(D) Geometry (40 hrs):**

**(i) Visualizing solid shapes:**

- Visualizing closed figures like a square, rectangle, triangle, Quadrilateral, polygon etc.
- Identify and Match pictures with objects.

**(ii) Understanding quadrilateral:**

- Properties of quadrilaterals – Sum of angles of a quadrilateral is equal to 360 (By verification)
- Properties of a parallelogram (By verification), Opposite Sides/Angle of a parallelogram are equal, Diagonals of a parallelogram bisect each other.
- Study of Side/Diagonals of a rectangle, Rhombus, and Square.

**(iii) Representing 3-D in 2-D: **

- Drawing 2-D representation of 3-D objects (Continued and extended)
- Counting vertices, edges, verifying Euler’s relation for 3-D figures with flat faces (cubes, cuboid, tetrahedrons, prisms, and pyramids)

**(iv) 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

**(E) 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)
- The surface area of a cube, cuboid, cylinder.

**(F) Data handling (15 hrs): **

- Bar graphs of several data, arranging ungrouped into groups data, representation of grouped data through bar-graphs, constructing and interpreting bar graphs.
- Pie charts with different data numbers
- Visual representation of frequency outcomes of repeated throws of the same kind of coins or dice. Observing the aggregating numbers over a large number of repeated events.

**(G) Introduction to graphs (15 hrs):**

- Axes, Cartesian Plane.
- Plotting points for different kind of situations in the X-Y plan.
- Reading of linear graph like distance vs time graph