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Fractions

A fraction is way to express a number by division.

A fraction consists of a numerator above a denominator separated by a horizontal line.

frac{numerator}{denominator}


For example, the division 5 : 6 can be expressed with the fraction:

frac{5}{6}

The result of 5 divided by 6 is 0.83333…. Expressed as a decimal number this result is not exact.

Expressed as a fraction, however, the result is exact.

Sometimes you will see fractions written with a slash, because that’s an easier way to make a fraction with an ordinary keyboard:

1/2=frac{1}{2}

Names of the fractions


Fractions can be named after the numerator and the denominator. For example:

frac{1}{4}

Is also called “one forth”, because the numerator is one and the denominator is four.

pizzaonefourth.pngYou can also explain the fraction with a pizza divided into four slices. One forth is when you are allowed to take one slice out of the four slices.