|

# fraction

## Notation for Fractions

In writing a fraction, e.g., 2/5 or 2-5, the number after or below the bar represents the total number of parts into which the unit has been divided. This number is called the denominator. The number before or above the bar, the numerator, denotes how many of the equal parts of the unit have been taken. The expression 2/5, then, represents the fact that two of the five parts of the unit or quantity have been taken. The present notation for fractions is of Hindu origin, but some types of fractions were used by the Egyptians before 1600 B.C. Another way of representing fractions is by decimal notation (see decimal system).

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

#### See more Encyclopedia articles on: Mathematics

Premium Partner Content
 Documents Images and Maps Reference (from Newspapers, Magazines, Journals, Newswires, Transcripts and Books)

Research our extensive archive of more than 80 million articles from 6,500 publications.

Additional search results provided by HighBeam Research, LLC. © Copyright 2005. All rights reserved.

# 24 X 7

## Private Tutor

 24 x 7 Tutor Availability Unlimited Online Tutoring 1-on-1 Tutoring

### The Family Education Network

About Infoplease,
Part of Family Education Network