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In a fraction, the denominator is below the fraction bar, the numerator is above this bar.



The numerator is also called dividend and the denominator is called divisor

       Numerator   =   Dividend   = Quotient
 Denominator    Divisor 

When calculating a fraction, a remainder may arise

Dividend ≡ Divisor × Quotient + Remainder


Rational numbers

If the numerator and the denominator are both integers you have a rational number



The concepts numerator and denominator were introduced by the French mathematician Nicole Oresme (about 1323 - 1382).

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