SECTION 1-2 : ORDER OF OPERATIONS and EVALUATING EXPRESSIONS

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Presentation transcript:

SECTION 1-2 : ORDER OF OPERATIONS and EVALUATING EXPRESSIONS ALGEBRA I @ SECTION 1-2 : ORDER OF OPERATIONS and EVALUATING EXPRESSIONS

At the end of this lesson you should be able to simplify expressions involving exponents and use the order of operations to evaluate expressions.

34 1) Evaluate : 12 ÷ 3 + 6 • 5 Well…..the real answer is…. What did you get? Well…..the real answer is…. Are you ready? Here it is… 34

We need a way so everyone can arrive at the same answer using order of operations.

Evaluate. 1) 53 ANSWER : 125 2) 8 + 3 • 52 – (18 – 8) ÷ 5 ANSWER : 81 3) ANSWER : 2 4) [25 + 8(12 – 11)] ÷ 11 ANSWER : 3

Evaluate each expression if x = 12 and y = 3. 5) xy ÷ 9 ANSWER : 4 6) (2y + 10) – x ÷ 4 ANSWER : 13 7) x2 – 33 + (x + y)2 ANSWER : 342 8) ANSWER : 12

ALGEBRA I - SECTION 1-2 (Order of Operations) 9) One more little problem. 43 ÷ 25 + (29 – 19)2 + 14 + 25 • 5 ÷ 10 ÷ 2 – 6 • 4 + 2 ANSWER : 102