Rational numbers are one very prevalent kind of number that we typically study after integers in math. These numbers are in the form of p/q, where p and q have the right to be any kind of integer and also q ≠ 0. Most often world uncover it confusing to distinguish between fractions and rational numbers bereason of the fundamental structure of numbers, that is p/q form. Fractions are comprised of whole numbers while rational numbers are consisted of of integers as their numerator and denominator. Let's learn more around rational numbers in this leskid.

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1.What are Rational Numbers?
2.Types of Rational Numbers
3.How to Identify Rational Numbers?
4.Arithmetic Operations on Rational Numbers
5. Irrational vs Rational Numbers
6.FAQs on Rational Numbers

What are Rational Numbers?

Do you recognize from wright here the word "Rational" originated? It is originated from the word "ratio". So, rational numbers are very well related to the ratio idea of ratio.

Rational Numbers Definition

A rational number is a number that is of the form p/q where p and also q are integers and q is not equal to 0. The collection of rational numbers is deprovided by Q.

In various other words, If a number deserve to be expressed as a fraction wright here both the numerator and the denominator are integers, the number is a rational number.


Examples of Rational Numbers

If a number have the right to be expressed as a fraction wright here both the numerator and also the denominator are integers, the number is a rational number. Some examples of rational numbers are:

Types of Rational Numbers

Tright here are different forms of rational numbers. We shouldn't assume that just fractions through integers are rational numbers. The various kinds of rational numbers are:

integers like -2, 0, 3 etc.fractions whose numerators and denominators are integers favor 3/7, -6/5, and so on.terminating decimals prefer 0.35, 0.7116, 0.9768, and so on.

How to Identify Rational Numbers?

In each of the above situations, the number deserve to be expressed as a portion of integers. Hence, each of these numbers is a rational number. To discover whether a given number is a rational number, we have the right to check whether it matches with any type of of these conditions:

We can reexisting the provided number as a fraction of integersWe the decimal growth of the number is terminating or non-terminating repeating.


The given number has a collection of decimals 923076 which is repeating repeatedly.


Hence, it is a rational number.

Rational Numbers in decimal form

Rational numbers deserve to additionally be expressed in decimal create. Do you understand 1.1 is a rational number? Yes, it is because 1.1 deserve to be created as 1.1= 11/10. Now let's talk about non-terminating decimals such as 0.333..... Because 0.333... have the right to be written as 1/3, therefore it is a rational number. Because of this, non-terminating decimals having actually recurring numbers after the decimal allude are likewise rational numbers.

Is 0 a Rational Number?

Yes, 0 is a rational number as it deserve to be composed as a fraction of integers favor 0/1, 0/-2,... and so on.


List of Rational Numbers

From the over information, it is clear that tright here is an infinite number of rational numbers. Hence, it is not feasible to identify the list of rational numbers.

Smallest Rational Number

Because we cannot recognize the list of rational numbers, we cannot determine the smallest rational number.

Points to Remember Rational Numbers:

Rational numbers are NOT just fractions yet any type of number that can be expressed as fractions.Natural numbers, whole numbers, integers, fractions of integers, and terminating decimals are rational numbers.Non-terminating decimals through repeating fads of decimals are likewise rational numbers.If a fraction has a negative authorize either to the numerator or to the denominator or in front of the fraction, the fraction is negative. i.e, -a/b = a/-b.

Arithmetic Operations on Rational Numbers

Rational numbers have the right to be included, subtracted, multiplied, or divided just favor fractions. These are the 4 basic arithmetic operations perdeveloped on rational numbers.

Addition of rational numbersRational numbers subtractionRational Numbers multiplicationDivision of rational numbers

Adding and Subtracting Rational Numbers

The procedure of including and subtracting rational numbers deserve to be done in the same means as fractions. To include or subtract any type of 2 rational numbers, we make their denominators the very same and then include the numerators.

Example : 1/2 - (-2/3)= 1/2 + 2/3 = 1/2 × 3/3 + 2/3 × 2/2 = 2/6 + 4/6 = 6/6 = 1

We deserve to learn more around enhancement of fractions and subtractivity of fractions.

Multiplying and Dividing Rational Numbers

The procedure of multiplying and splitting rational numbers can be done in the very same means as fractions. To multiply any two rational numbers, we multiply their numerators and their denominators independently and simplify the resultant fractivity.

Example: 3/5 × -2/7 = (3 × -2)/(5 × 7)= -6/35

To divide any type of 2 fractions, we multiply the first fraction (which is dividend) by the reciprocal of the second fraction (which is the divisor).

Example: 3/5 ÷ 2/7=3/5 × 7/2 = 21/10 or (2dfrac110)

Irrational vs Rational Numbers

The numbers which are NOT rational numbers are called irrational numbers. The collection of irrational numbers is represented by Q´. The distinction in between rational and irrational numbers are as follows:

Rational NumbersIrrational Numbers

These are numbers that deserve to be expressed as fractions of integers.

Examples: 0.75, -31/5, etc

These are numbers that CANNOT be expressed as fractions of integers.

Examples: √5, π, etc.

They deserve to be terminating decimals.They are NEVER terminating decimals.

They have the right to be non-terminating decimals via recurring trends of decimals.

Example: 1.414, 414, 414 ... has actually repeating trends of decimals wbelow 414 is repeating.

They should be non-terminating decimals through NO recurring fads of decimals.

Example: √5 = 2.236067977499789696409173.... has actually no repeating fads of decimals

The collection of rational numbers includes all-natural numbers, all totality numbers, and all integers.The set of irrational numbers is a separate set and also it does NOT contain any of the other sets of numbers.

Look at the chart given listed below to understand also the distinction between rational numbers and irrational numbers along with other forms of numbers pictorially.


Example 2: Find a rational number between the following: 1/2 and 2/3.

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We understand that the average of any two numbers lies in between the 2 numbers. Let's uncover the average of the offered 2 rational numbers.

( eginaligned dfrac dfrac12+ dfrac232 &= dfracdfrac36+ dfrac462\<0.3cm> &= dfrac left(dfrac76 ight)2\<0.3cm> &= dfrac left(dfrac76 ight) left(dfrac21 ight) endaligned )= 7/6 × 1/2= 7/12