 # CBSE Class 10 Mathematics Reduced Syllabus for 2020-21

Ed Tech
11 Jul 2020
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CBSE Syllabus 2020-21 has been revised and reduced by 30% for 9th, 10th, 11th & 12th. Due to COVID-19 pandemic & nationwide lockdown, ongoing academic session is affected. After a thorough analysis of the situation and suggestions from experts & teachers, the Central Board of Secondary Education (CBSE) has been instructed by the HRD Ministry to reduce the syllabus. In response, after careful analysis and review, CBSE has cut 30% syllabus.

#### Deleted Syllabus

CHAPTER: TOPICS REMOVED

UNIT I-NUMBER SYSTEMS

REAL NUMBERS:  Euclid’s division lemma

UNIT II-ALGEBRA

POLYNOMIALS :   Statement and simple problems on division algorithmfor polynomials with real coefficients.

PAIR OF LINEAR EQUATIONS IN TWO VARIABLES :  cross multiplication method

QUADRATIC EQUATIONS:  Situational problems based on equations reducible to quadratic equations ARITHMETIC PROGRESSIONS:   Application in solving daily life problems based on the sum to n terms

UNIT III-COORDINATE GEOMETRY

COORDINATE GEOMETRY:  Area of a triangle.

UNIT IV-GEOMETRY

TRIANGLES Proof of the following theorems are deleted :  The ratio of the areas of two similar triangles is equal to the ratio of the squares of their corresponding sides. ,  In a triangle, if the square on one side is equal to sum

of the squares on the other two sides, the angle

opposite to the first side is a right angle.

CIRCLES No deletion

CONSTRUCTIONS:  Construction of a triangle similar to a given triangle.

UNIT V- TRIGONOMETRY

INTRODUCTION TO TRIGONOMETRY: motivate the ratios whichever are defined at 0o and 90o.

TRIGONOMETRIC IDENTITIES: Trigonometric ratios of complementary angles.

HEIGHTS AND DISTANCES No deletion

UNIT VI-MENSURATION

AREAS RELATED TO CIRCLES:  Problems on the central angle of 120°

SURFACE AREAS AND

VOLUMES:  Frustum of a cone.

UNIT VII-STATISTICS & PROBABILITY

STATISTICS:  Step deviation Method for finding the mean, Cumulative Frequency graph

PROBABILITY No deletion

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