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**1-4 Order of Operations Main Idea Evaluate expressions using the order of operations.**

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Evaluate this: 6-5x3÷5+1= 4

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Order of Operations Evaluate the expressions inside grouping symbols. Example: 3+(4x3) = 3+12 = 15 Evaluate all powers. Example: Multiply and divide in order from left to right. Add and subtract in order from left to right.

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**Evaluate again using the orders of operations: 6-5x3÷5+1=**

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**6-5x3÷5+1= Step 1. Does not apply because there are no ().**

powers. Step 3. Multiply 5x3 = 15. Then divide 15 ÷5=3. We are left with: 6-3+1= Step = =4.

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22-3(8-2)+12÷4= Step 1. (8-2)=6 We now have 22-3(6)+12÷4= Step 2. Does not apply. No exponents/powers Step 3. 3(6)=18 and 12÷4=3 We now have Step 4. Solving Left to right, 22-18=4 and 4+3=7

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Activity

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Problem 1 6+8÷2+2(3-1)=

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Problem 2

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Problem 3 (6+5)x(8-6)=

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Problem 4 45÷(4-1) =

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ORDER OF OPERATIONS. 1.Perform any operations with grouping symbols. 2.Simplify powers. 3.Multiply and divide in order from left to right. 4.Add and subtract.

ORDER OF OPERATIONS. 1.Perform any operations with grouping symbols. 2.Simplify powers. 3.Multiply and divide in order from left to right. 4.Add and subtract.

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