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Grade 7:  The Learning Equation Math

12.03 Order of Operations

 Number Operations Refresher pp 26-7
Learning Objectives:

The student will:

Order of Operations

Some students like these rules:

 B E DM AS Brackets (parentheses) Exponents Divide or Multiply Add or Subtract (Innermost first) (Powers or roots) (from LEFT-to-RIGHT) (from LEFT-to-RIGHT)

 Order of Operation Calculator #1 This calculator does not handle exponents at this time. = Enter a math expression (with +, -, *, and / signs).  Try to calculate the solution, mentally before clicking .

Others prefer:

 Please Excuse My Dear Aunt Sally Parentheses (brackets) Exponents Divide or Multiply Add or Subtract (Innermost first) (Powers or roots) (from LEFT-to-RIGHT) (from LEFT-to-RIGHT)

When you have more than one operation in a math problem, you must solve it following the correct ORDER OF OPERATIONS:

• First, copy the problem EXACTLY.

• Then go through each level of operations

(Brackets Exponents Multiply Divide Add Subtact)

or

(Please Excuse My Dear Aunt Sally)

• Do the operations within each level from left-to-right.

• Write the answer directly below the operation sign.

• Bring down the other numbers (be careful not to re-use any).

• Continue until all operations are completed.

Modified source:  Order of Operations -- How to do It

## Power Calculator

The next order of operation calculator allows you to enter powers.   Practice calculating powers in different formats first.   Enter the exponent and base then click on Calculate.  The first set of numbers have been entered as a guide.

to the th/nd power is:

 =

^ =

Order of Operations Calulator #2

Steps may vary depending on the calculator used.

23-5x4

23 5 4

4x3-6÷2

4 3 6 2
or
4 3 6 2

52-3(5(2+4)+6)

5 3 5 2 4 6

Review:

Order of Operations Pretest

Amby's Math Resources - Integers: Exercises with Signed Numbers

Enrichment:

Funbrain.com's Operation Order Algebra Game

The Flippo 24-Game

Operations on the Real Numbers and Entering Formulas

 Key Terms: A-E F-J K-O P-R S-Z

Operation, sum, numerator, denominator, parentheses

Prerequisite Skills:

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