# CBSE Class 10 Mathematics Revised Syllabus 2020-2021

CBSE revised the syllabus of Class 10 Maths subject for the current academic year (2020-2021). The Board reduced the Class 10 Maths Syllabus to compensate for the loss of studies under the effect of COVID-19 lockdown. Students must check this updated syllabus while studying Mathematics and preparing for their board exam. Like the previous academic session, Board Exam 2021 will again offer two versions of Mathematics paper to students, one easy and the other of the standard level. However, the syllabus for both types of papers remains common. So, all students are advised to refer to the latest syllabus while they prepare for their school and board examinations.

Contents of CBSE Class 10 Maths syllabus 2020-2021 are:

• Unit-wise weightage
• Topics and sub-topics to be prepared from each unit
• Question paper design for the annual board examination
• Components of Internal Assessment
• Prescribed books

CBSE had introduced certain changes in the Maths question paper structure in the board exam 2020. About 25% of the questions in the paper were of objective type with each carrying 1 mark. The same is expected to be followed in the next year's board examinations. For this, you can check the question paper design suggested by CBSE in this new syllabus.

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Also Read: CBSE Class 10 Complete Guide for Preparations of Board Exam 2021

## Find below the complete CBSE Class 10 Maths Syllabus 2020-2021:

CBSE Class 10 Mathematics Unit-Wise Weightage

 Units Unit Name Marks I NUMBER SYSTEMS 06 II ALGEBRA 20 III COORDINATE GEOMETRY 06 IV GEOMETRY 15 V TRIGONOMETRY 12 VI MENSURATION 10 VII STATISTICS & PROBABILITY 11 Total 80

Also Check: CBSE Class 10 Maths Deleted Topics from Syllabus for 2020-21

## CBSE Class 10 Mathematics Course Structure:

UNIT I: NUMBER SYSTEMS

1. Real Numbers  (8 Periods)

Fundamental Theorem of Arithmetic - statements after  reviewing work done earlier and after illustrating and motivating through examples, Proofs of irrationality of Decimal representation of rational numbers in terms of terminating/non-terminating recurring decimals.

UNIT II: ALGEBRA

1. Polynomials  (4 Periods)

Zeros of a polynomial. Relationship between zeros and coefficients of quadratic polynomials.

2. Pair of Linear Equations in Two Variables (11 Periods)

Pair of linear equations in two variables and graphical method of their solution, consistency/inconsistency.

Algebraic conditions for number of solutions. Solution of a pair of linear equations in two variables algebraically - by substitution, by elimination. Simple situational problems. Simple problems on equations reducible to linear equations.

Standard form of a quadratic equation ax2 + bx + c = 0, (a ≠ 0). Solutions of quadratic equations (only real roots) by factorization, and by using quadratic formula. Relationship between discriminant and nature of roots.

4. Arithmetic Progressions (4 Periods)

Motivation for studying Arithmetic Progression Derivation of the nth term and sum of the first n terms of an A.P.

UNIT III: COORDINATE GEOMETRY

1. Lines (In two-dimensions) (10 Periods)

Review: Concepts of coordinate geometry, graphs of linear equations. Distance formula. Section formula (internal division).

UNIT IV: GEOMETRY

1. Triangles (10 Periods)

Definitions, examples, counter examples of similar triangles.

1. (Prove) If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points, the other two sides are divided in the same ratio.

2. (Motivate) If a line divides two sides of a triangle in the same ratio, the line is parallel to the third side.

3. (Motivate) If in two triangles, the corresponding angles are equal, their corresponding sides are proportional and the triangles are similar.

4. (Motivate) If the corresponding sides of two triangles are proportional, their corresponding angles are equal and the two triangles are similar.

5. (Motivate) If one angle of a triangle is equal to one angle of another triangle and the sides including these angles are proportional, the two triangles are similar.

6. (Motivate) If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse, the triangles on each side of the perpendicular are similar to the whole triangle and to each other.

7. (Prove) In a right triangle, the square on the hypotenuse is equal to the sum of the squares on the other two sides.

2. Circles (8 Periods)

Tangent to a circle at, point of contact.

1. (Prove) The tangent at any point of a circle is perpendicular to the radius through the point of contact.

2. (Prove) The lengths of tangents drawn from an external point to a circle are equal.

3. Constructions (4 Periods)

1. Division of a line segment in a given ratio (internally).

2. Tangents to a circle from a point outside it.

UNIT V: TRIGONOMETRY

1. Introduction to Trigonometry (8 Periods)

Trigonometric ratios of an acute angle of a right-angled triangle. Proof of their existence (well defined). Values (with proofs) of the trigonometric ratios of 30o, 45o and 60o. Relationships between the ratios.

2. Trigonometric Identities (10 Periods)

Proof and applications of the identity sin2A + cos2A = 1. Only simple identities to be given.

3.  Heights and Distances: Angle of elevation, Angle of Depression. (8 Periods)

Simple problems on heights and distances. Problems should not involve more than two right triangles. Angles of elevation / depression should be only 30o, 45o, 60o.

UNIT VI: MENSURATION

1. Areas Related to Circles (10 Periods)

Motivate the area of a circle; area of sectors and segments of a circle. Problems based on areas and perimeter / circumference of the above said plane figures. (In calculating area of segment of a circle, problems should be restricted to central angle of 60°, 90° only. Plane figures involving triangles, simple quadrilaterals and circle should be taken.)

2. Surface Areas and Volumes (8 Periods)

1. Surface areas and volumes of combinations of any two of the following: cubes, cuboids, spheres, hemispheres and right circular cylinders/cones.

2. Problems involving converting one type of metallic solid into another and other mixed problems. (Problems with combination of not more than two different solids be taken).

UNIT VII: STATISTICS AND PROBABILITY

1. Statistics (10 Periods)

Mean, median and mode of grouped data (bimodal situation to be avoided).

2. Probability (10 Periods)

Classical definition of probability. Simple problems on finding the probability of an event.

Also Check:

NCERT Book for Class 10 Hindi

NCERT Exemplar Solutions for Class 10 Maths

NCERT Exemplar Solutions for Class 10 Science

# CBSE Class 10 Maths Question Paper Design

To know the typology of questions for Class 10 Maths Board Exam 2021, go through the question paper design given below as suggested by CBSE. It will be quite helpful to structure your study plan and work in a productive way.

MATHEMATICS-Standard
Code (041)
QUESTION PAPER DESIGN
CLASS – X (2020-21)
Time : 3 Hours                                                                                                       Max. Marks: 80

 Internal Assessment 20 Marks Pen Paper Test and Multiple Assessment (5+5) 10 Marks Portfolio 05 Marks Lab Practical (Lab activities to be done from the prescribed books) 05 Marks

MATHEMATICS-Basic
Code (041)
QUESTION PAPER DESIGN
CLASS – X (2020-21)

Time : 3Hours                                             Max. Marks: 80

 Internal Assessment 20 Marks Pen Paper Test and Multiple Assessment (5+5) 10 Marks Portfolio 05 Marks Lab Practical (Lab activities to be done from the prescribed books) 05 Marks

PRESCRIBED BOOKS:

 1. Mathematics - Textbook for class X - NCERT Publication 2. Guidelines for Mathematics Laboratory in Schools, class X - CBSE Publication 3. Laboratory Manual - Mathematics, secondary stage - NCERT Publication 4. Mathematics exemplar problems for class X, NCERT publication.