 ## Tutoring on Order of Operations and Expressions

Learning Objectives:

#### Understand to Simplify and Evaluate Expressions using Order of Operations

Order of Operations and Expressions

The Basic Rules for the order of operations are:

1) Calculate within the innermost Parentheses or grouping symbols, ( ), [ ], { }, and above or below fraction bars.

2) Simplify all expressions with Exponents.

3) Multiply and Divide from left to right.

4) Add and Subtract from left to right.

The Distributive Property states when we multiply a factor and a sum or difference, we multiply each term of the sum or difference by the factor.

1)  a(b+c) = ab+ac ,           2)  a(b-c) = ab-ac

A Variable is a letter that represents an unknown quantity.

A Variable Expression consists of variables, constants, numbers and operations like addition, subtraction, multiplication, and division.

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Hook Questions:

1. Why is it important that we have an agreed upon order of operations?

2. The saying "Please Excuse My Dear Aunt Sally" has been used to recall the standard order of operations. How do you think it helps?

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