Lesson 1.2-Order of Operations, pg. 11 Objectives: To evaluate numerical expressions by using the order of operations. To evaluate algebraic expressions.

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Lesson 1.2-Order of Operations, pg. 11 Objectives: To evaluate numerical expressions by using the order of operations. To evaluate algebraic expressions by using the order of operations.

Order of Operations Step 1: Grouping symbols - Parentheses - Fraction Bar Step 2: Evaluate all powers Step 3: Do all multiplication and/or division from left to right Step 4: Do all addition and subtraction from left to right.

“Please Excuse My Dear Aunt Sally”

Ex. 1: Evaluate expressions – 2 × ÷ 2³ × 3 + 5

Ex. 2: Grouping Symbols 3. (8 – 3) × 3(3 + 2)4. 4[12 ÷ (6 – 2)]²

You try! × 26. 4(11 +7) – 9 × 2

Fraction Bars 7.

Your turn…. 8.

Ex. 4: Evaluate each expression if g=4, h=6, j=8, and k=12. 1.hk – gj 2. 2k + gh² - j 3.2g(h –g) gh - j

A computer store has certain software on sale at 3 for $20.00, with a limit of 3 at the sale price. Additional software is available at the regular price of $9.95 each. a)Write an expression you could use to find the cost of 5 software packages. b)How much would 5 software packages cost?

Summary Step 1: Grouping symbols - Parentheses - Fraction Bar Step 2: Evaluate all powers Step 3: Do all multiplication and/or division from left to right Step 4: Do all addition and subtraction from left to right.  NBA #2, pg. 14, problems even & #31