# 1.4: Algebraic Expressions with Fraction Bars

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Fraction Bar

A fraction bar is a line used to divide the numerator and the denominator of a fraction. The fraction bar means division.fraction

A fraction is a part of a whole. A fraction is written mathematically as one value on top of another, separated by a fraction bar. It is also called a*rational number*.

Order of Operations

The order of operations specifies the order in which to perform each of multiple operations in an expression or equation. The order of operations is: P - parentheses, E - exponents, M/D - multiplication and division in order from left to right, A/S - addition and subtraction in order from left to right.Parentheses

Parentheses "(" and ")" are used in algebraic expressions as grouping symbols.PEMDAS

PEMDAS (Please Excuse My Daring Aunt Sally) is a mnemonic device used to help remember the order of operations: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.Volume

Volume is the amount of space inside the bounds of a three-dimensional object.### Image Attributions

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Learn how to work with fraction bars when evaluating expressions.

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Date Created:

Feb 24, 2012
Last Modified:

Aug 17, 2016
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