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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Asset for students to excel in CBSE board exam as well as competitive exams like NTSE etc.
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
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.
Triangle is derived from word Tri meaning three & Angle, implies 3 angles. It is a closed figure formed by 3 intersecting lines.
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.
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
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. 
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.
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 “.
