Month: March 2020

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 […]

3D shapes/objects are those which do not lie completely in a plane. 3D objects have different views from different positions. A solid is a polyhedron if […]

Length of boundary of a simple closed figure is known as perimeter. Area is the measure of region enclosed in a simple closed curve. Perimeter […]

Exponential notation is a powerful way to express repeated multiplication of the same number. Specifically, powers of 10 express very large and very small numbers in a […]

Graphical representation of data is easier to understand. A bar graph, a pie chart and histogram are graphical representations of data. A line graph displays data […]