Rational number

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The rational numbers (ℚ) are included in the real numbers (ℝ), and in turn include the integers (ℤ), which include the natural numbers (ℕ)

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]

  1. 5
  2. 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]

÷ = = .

See Also[edit | edit source]

References[edit | edit source]