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Algebra 1A - Order of Operations Lesson

In this lesson, students will learn how to evaluate numerical and algebraic expressions using the order of operations. They will also practice solving equations with grouping symbols. Homework and classwork assignments included.

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Algebra 1A - Order of Operations Lesson

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  1. AGENDA – ALGEBRA 1A AUG. 23, 2012 (THURSDAY) • Go over the homework • Lesson 1.2 – Order of Operations • Objectives: • Evaluate numerical expressions by using the order of operations. • Evaluate algebraic expressions by using the order of operations. • Standard 7AF1.2 – Use the correct order of operations to evaluate algebraic expressions.

  2. CW #4 – Skills Practice (odd) • HW #3 – Skills Practice (even) • Reflection

  3. PEMDAS Parenthesis Exponent Multiplication Division Addition Subtraction

  4. Example 1: Evaluate each expression. • 15 ÷ 3  6 – 42 b. 8 – 6  4 ÷ 3 c. 32 + 72 – 5  2

  5. Example 2: Grouping symbols Evaluate each expression. • 2(5) + 3(4 + 3) b. 2[5 + (30 ÷ 6)2] c.

  6. Example 3. Evaluate an algebraic expression. • Evaluate a2 – (b3 – 4ac) if a = 7, b = 3, and c = 5. b. Evaluate x(y3 + 8) if x = 3 and y = 4.

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