 # QUICK REVISION CBSE CLASS 10 MATHEMATICS

The ebook ‘Quick revision Chapterwise mind- maps’ Class-10 Mathematics covers 15 chapters of NCERT
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### CBSE Class 10 Marking Scheme And Weightage Distribution – Maths

Below mentioned are the list of chapters/units with their weights for the board exams for 2019-20:

The CBSE Class 10 marking scheme and weightage distribution for Mathematics are tabulated below:

 Unit Title Weightage 1 Number System 06 2 Algebra 20 3 Co-ordinate Geometry 06 4 Geometry 15 5 Trigonometry 12 6 Mensuration 10 7 Statistics And Probability 11 Total Marks 80

###      REAL NUMBER

The type of number we normally use, such as 1, 15.82, −0.1, 3/4, etc. Positive or negative, large or small, whole numbers or decimal numbers are all Real Numbers. They are called “Real Numbers” because they are not Imaginary Numbers. POLYNOMIALS
A polynomial is defined as an expression of two or more algebraic terms. The term polynomial itself means “poly” (means many) and “nomial” (means terms). A polynomial can consist of constants, variables, and even exponents. PAIR OF LINEAR EQUATIONS IN TWO VARIABLES

If two linear equations have the two same variables, they are called a pair of linear equations in two variables. Following is the most general form of linear equations: a1x + b1y + c1 = 0. A real number x is called a root of the quadratic equation ax2 + bx + c =0, a 0 if aα2 + bα + c =0.In this case, we say x = α is a solution of the quadratic equation.

NOTE:

1. The zeroes of the quadratic polynomial ax2 + bx + c and the roots of the quadratic equation ax2 + bx + c = 0 are the same.
2. Roots of quadratic equation ax2 + bx + c =0 can be found by factorizing it into two linear factors and equating each factor to zero. ARITHMETIC PROGRESSION

A sequence is called an arithmetic progression (abbreviated A.P.) if and only if the difference of any term from its preceding term is constant. A sequence in which the common difference between successors and predecessors will be constant. i.e. a, a+d,a+2d. TRINANGLES

Triangle is derived from word Tri meaning three & Angle, implies 3 angles. It is a closed figure formed by 3 intersecting lines. COORDINATE GEOMETRY

The point of intersection of axis is called origin. The distance of a point from y axis is called x –coordinate or abscissa and the distance of the point from x –axis is called y – coordinate or Ordinate. TRIGNOMETRY

Trigonometry is a branch of mathematics dealing with relations involving lengths and angles of triangles. It can, in a simpler manner, be called the study of triangles. The angles are either measured in degrees or radians  CIRCLES

A circle is a closed shape with a set of points in a plane which are at a specific distance from the center. This specific distance is known to be the radius of a circle. SURFACE AREAS AND VOLUMES STATISTICS

Statistics deals with collection, presentation, analysis and interpretation of numerical data. Arranging data in a order to study their salient features is called presentation of data. Data arranged in ascending or descending order is called arrayed data or an array. PROBABILITY

Theoretical probability associated with an event E is defined as “If there are ‘n’ elementary events associated with a random experiment and m of these are favourable to the event E then the probability of occurrence of an event is defined by P(E) as the ratio “. Hello