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# Order of Operations

This presentation will take students on a journey to learn the order of operations through a series of steps. Video tutorials and extra practice problems included.
by

## Gina Mulranen

on 12 November 2013

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#### Transcript of Order of Operations

Order of Operations
A Journey through Operations
The Order of Operations
Time to Practice!
In order to evaluate a numerical expression containing multiple operations, operations are done in the following order from left to right.
Do the operations in parentheses first. This also includes any other grouping symbols like brackets and radicals.
P - Parentheses
The next operation to evaluate is exponents.
E - Exponents
The next two operations that you evaluate in a numerical expression is multiplication and division. These operations are calculated as they appear in the expression left to right.
MD - Multiplication and Division
Click on the following link to practice evaluating numerical expressions using the order of operations.
Fraction Bars
When you have multiple operations in the numerator and/or denominator of a fraction, you follow the order of operations to simplify the numerator and denominator separately. Then you divide.
Exponent Review #1
When evaluating exponents, remember that an exponent represents repeated multiplication of the base.
Ex:
A and S - Addition and Subtraction
The next two operations to evaluate are addition and subtraction. These operations are also calculated left to right, just like multiplication and division.
Mnemonics
To help remember this important mathematical rule, there are different mnemonic devices to help you remember!
PEMDAS
BODMAS (UK)
PEMA (New Zealand)
Around the World
In Canada and other English speaking countries, Parentheses may be called Brackets, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, which have the same precedence as Roots or Radicals. Therefore, some of the words in PEMDAS are different for other countries around the world.
Parentheses (Grouping Symbols)
Exponents
Multiplication and Division