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Published bySharyl Davidson Modified over 8 years ago

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**Vocabulary Section 1-2 Power: has two parts a base and an exponent.**

Exponent: tells you how many times to multiply the base. Base: large number in a power. Simplify: a numerical expression when you replace it with its single numerical value.

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**Section 1-2: Order of Operations and Evaluating Expressions**

Pearson Algebra I

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**I am learning to… Simplify expressions involving exponents.**

Use the order of operations to evaluate expressions.

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**Example 1: Simplifying Powers**

3 4 (0.5) 3

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**Key Concept: Order of Operations**

Parentheses Exponents Multiplication Division Addition Subtraction

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**Example 2: Simplifying a Numerical Expression**

5∙7− 4 2 ÷2 12−25÷5 −2

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**Example 3: evaluating Algebraic Expressions**

What is the value of each expression when a = 3 and b = 4. 3𝑏− 𝑎 2 2 𝑏 2 −7𝑎

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**Formative Assessments**

Exits Slip: Evaluate the following expression for s = 2 and t = 5. 3𝑠(3) 11−5(𝑡) 2 Homework: page 13 #’s even

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