A rational number is a number that deserve to be composed in the type of a common fraction of 2 integers. In various other words, the is a number that can be represented as one integer split by one more integer. The complying with are some examples.

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Properties of reasonable numbers

Rational numbers, together a subset the the set of genuine numbers, shares every the properties of real numbers. Listed below are some specific properties of reasonable numbers, several of which identify them indigenous irrational numbers.


One the the nature of rational numbers the separates them from their irrational equivalent is the home of closure. Reasonable numbers are closed under the to work of addition, subtraction, multiplication, and also division. This way that performing any kind of of this operations using 2 rational numbers will certainly always result in one more rational number:

2 + 2 = 4

2 - 2 = 0

2 × 2 = 4

2 ÷ 2 = 1

All of the results are rational numbers, and also the result of these operations will constantly be rational provided that the initial two values room rational numbers. This is no true that irrational numbers, which can either an outcome in rational or irrational numbers depending on the original values.

Additive inverses

All rational numbers have an additive inverse. Provided a reasonable number a/b, its additive train station is:


Also, given a non-zero rational number, a/b, that multiplicative inverse is:


The multiplicative station is additionally known as the reciprocal.

Below are some other basic things come note around rational numbers.

The denominator the the common fraction used to express a rational number cannot be 0.All integers room rational numbers since the denominator that the common portion can be 1.


1. The examples used over can all be converted into either terminating decimals or repeating decimals:






Rational numbers and also other number sets

There are many different sets of numbers that are commonly used throughout jajalger2018.orgematics. Numerous of lock overlap, and it deserve to be useful to recognize the assorted differences in between number sets and how they relate to each other.

The set of rational numbers is typically denoted as Q. It is a subset that the collection of genuine numbers (R), which is consisted of of the set of rational and also irrational numbers.

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The set of reasonable numbers additionally includes 2 other commonly used subsets: the set of integers (Z) and also natural number (N). Rational number include all of the integers and all the values between each integer, when integers include every one of the organic numbers in enhancement to their an unfavorable values.

The complying with image depicts the relationship described above (excluding irrational numbers):