# 1.4: Order of Operations

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**Practice**Order of Operations

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Term | Definition |
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Brackets |
Brackets [ ], are symbols that are used to group numbers in mathematics. Brackets are the 'second level' of grouping symbols, used to enclose items already in parentheses. |

Expression |
An expression is a mathematical phrase containing variables, operations and/or numbers. Expressions do not include comparative operators such as equal signs or inequality symbols. |

Grouping Symbols |
Grouping symbols are parentheses or brackets used to group numbers and operations. |

nested parentheses |
Nested parentheses describe groups of terms inside of other groups. By convention, nested parentheses may be identified with other grouping symbols, such as the braces "{}" and brackets "[]" in the expression . Always evaluate parentheses from the innermost set outward. |

Operations |
Operations are actions performed on variables, constants, or expressions. Common operations are addition, subtraction, multiplication, and division. |

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. |

Real Number |
A real number is a number that can be plotted on a number line. Real numbers include all rational and irrational numbers. |

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Description

Find the value of algebraic expressions that contain a series of multiple operations.

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Date Created:

Sep 26, 2012
Last Modified:

Jul 28, 2016
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