Articles by Mehak

Perimeter of a closed figure is the distance covered in one round along the boundary of the figure.  A closed figure in which all sides and […]

The word ‘variable’ means something that can vary, i.e., change. The value of a variable is not fixed. We use a variable to represent a number […]

Ratio, Proportion and Unitary Method.  The comparison of two numbers or quantities by division is known as the ratio. Symbol ‘:’ is used to denote ratio. […]

A figure is said to have line symmetry, if by folding the figure along a line, the left and right parts of it coincide exactly. The […]

A figure is said to have line symmetry, if by folding the figure along a line, the left and right parts of it coincide exactly. The […]

Representation of integers on the number line and their addition and subtraction Product of a positive integer and a negative integer is a negative integer, i.e, a […]

Two quantities x and y are said to be in direct proportion if they increase or decrease together in such a manner that the ratio of their […]

A fraction is either a proper fraction or an improper fraction.  A proper fraction is a number representing a part of a whole. This  whole may […]

Algebraic Expression Terms are formed by the product of variables and constants, e.g. –3xy, 2xyz, 5×2, etc.  Terms are added to form expressions, e.g. –2xy + […]

Representation of an algebraic expression as the product of two or more expressions is called factorisation. Each such expression is called a factor of the given algebraic […]