# Rational number

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A **rational number** is any number that can be expressed as the quotient or fraction of two integers, a numerator p and a non-zero denominator q.^{[1]}

## Examples[edit | edit source]

- 5
- 0.2

Notice the number 5 in second example! It is because all numbers are divisible by 1 and at such it is actually but it is more convenient to write it as 5.
**Note** Though all numbers are divisible by 1 some numbers are considered irrational ie they cannot be represented in the form also **note** that it impossible to have a number with 0 as the denominator (b must not be equal to 0 in ).

## Operations Involving Rational Numbers[edit | edit source]

### Addition[edit | edit source]

+ =

### Subtraction[edit | edit source]

- =

### Multiplication[edit | edit source]

• =

### Division[edit | edit source]

÷ = • = .