Introduction to Rational and Irrational Numbers | Mathematics | Class 9

Numbers that we are familiar with are natural numbers, whole numbers, and integers. Natural numbers are the ones that begin with 1 and goes on endlessly up to plus infinity. If we include 0 in these sets of numbers, then these numbers become whole numbers.

Now in these sets, if we also include the negative numbers, then we call it as integers. So all the numbers that we see collectively on the number line are called integers. To represent rationals, we divide the distance between two consecutive part into ‘n’ number of parts.

RationalFor example, to represent a3 divide the distance between 0 and 1, 1 and 2 and so on in three equal parts and that parts are represented as 13, 23, 33 and so on….

A rational number is a number that can be written in the form of a numerator upon a denominator. Here the denominator should not be equal to 0. The numerator and the denominator will be integers. A rational number is of the form

#rationalnumber #irrationalnumber #numbers

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