                       # Fractions Overview Simply put, a rational number is a fraction. A rational number is one which can be made by dividing one number by another non-zero number.

The number on the top is the numerator, the number on the bottom is the denominator. When one number is divided by another the result is called a quotient.

To make any number into a fraction, add a denominator of 1. It could be argued that the simplest fraction is 11.

1

=

11

13

=

131

421

=

42

 14,128 1

=

14,128

Fractions can be written with a sloping line or a horizontal line. Which is used might depend on how tidy it looks, or what you are doing with it. They have exactly the same meaning.

 1 2 =

12

1,2345,678

=

1,234 5,678
• The sloping line used to write a fraction is technically known as a solidus. It's sometimes called a fraction slash. It's slightly more leaning over than a normal forward slash used in ordinary writing: ⁄ vs /.
• The horizontal line used to write a fraction is technically known as a vinculum.      Home Astronomy Chemistry Electronics & Computers Mathematics Physics Field Trips Turn on javascript for email link