Arithmetic/Types of Numbers/Fraction

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Fraction is a ratio of two integer numbers. Fraction can be expressed mathematically

\frac{A}{B}, where B is not zero.


A is called Numerator
B is called Denominator

Equal Fractions[edit]

\frac{A}{B} = \frac{C}{D} when A = C , B = D
\frac{A}{B} \frac{D}{D} = \frac{C}{D} \frac{B}{B} when AD = BC


  1. \frac{A}{B} + \frac{C}{D} = \frac{AD + BC}{BD}
  2. \frac{A}{B} - \frac{C}{D} = \frac{AD - BC}{BD}
  3. \frac{A}{B} x \frac{C}{D} = \frac{AC}{BD}
  4. \frac{A}{B} / \frac{C}{D} = \frac{AD}{BC}, if C not zero.