CBSE Class 10 Maths Deleted Topics from Syllabus for Board Exam 2021UNIT I-NUMBER SYSTEMS | |
Chapter | Topics |
REAL NUMBERS | Euclid’s division lemma |
UNIT II-ALGEBRA | |
Chapter | Topics |
POLYNOMIALS | Statement and simple problems on division algorithm for 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 sum to n terms |
UNIT III-COORDINATE GEOMETRY | |
Chapter | Topics |
COORDINATE GEOMETRY | Area of a triangle |
UNIT IV-GEOMETRY | |
Chapter | Topics |
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 sumof 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 |
|
Chapter | Topics |
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 central angle of 120° |
SURFACE AREAS AND VOLUMES | Frustum of a cone |
UNIT VI-STATISTICS & PROBABILITY | |
Chapter | Topics |
STATISTICS | · Step deviation Method for finding the mean · Cumulative Frequency graph |
PROBABILITY | No deletion |
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