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Order of Operations. Section 1.3. 1.3. Order of Operations. 1. GOAL. Use the order of operations to evaluate algebraic expressions. To solve real-life problems, such as calculating the cost of admission for a family to a state fair. What you should learn. Why you should learn it. 1.3.
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Order of Operations Section 1.3
1.3 Order of Operations 1 GOAL Use the order of operations to evaluate algebraic expressions. To solve real-life problems, such as calculating the cost of admission for a family to a state fair. Whatyou should learn Why you should learn it
1.3 Order of Operations USING THE ORDER OF OPERATIONS 1 GOAL WHAT IS THE ORDER OF OPERATIONS? It’s the method we use to evaluate an expression involving more than one operation: 1. 2. 3. 4. Parenthesis (innermost first, work to the outermost) Powers Multiplication and division Addition and subtraction left to right left to right
Evaluate the expression when x = 3. 1. 2. Example 1
EXAMPLE 2 What happens when operations that have the same priority appear in the same expression, such as 5 – 4 +1? 5 – 4 + 1 1 + 1 2 5 – 4 + 1 5 – 5 0 Which is correct? Perform the operations from left to right!
Simplify the expression. Click to see each step. Example 4 Hint: The fraction bar serves as a grouping symbol. Simplify the numerator and denominator separately before the final step. Simplify the power. Simplify the numerator. Work from left to right. Subtract. Simplify.
Simplify the expression. Checkpoint • 1. Evaluate the expression when x = 5. • a. 2x2 + 8 b. 100 ÷ x2 + 6 58 10 • Simplify the expression. • a. 25 + 10 – 8 b. 24 ÷ 2 • 3 27 36 4
Homework • Worksheet 1.3 B #’s 1-24 evens SHOW YOUR WORK!! Can use a calculator to CHECK your answers but you MUST show your work for each step!