Ch 1-2 Order of Operations

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Presentation transcript:

Ch 1-2 Order of Operations Unit 1 Ch 1-2 Order of Operations

Vocabulary: Evaluate an expression: find the numerical value Order of Operations Rules: Simplify expressions inside parenthesis ( ) Simplify any exponents Do all multiplication and/or division from left to right Do all addition and/or subtraction from left to right

Find the value of each expression: 4 + 5 (divide) 9 (simplify) EX 2) 4 (5) – 3 20 – 3 (complete parenthesis) 17 (simplify)

Find the value of each expression [2 + (6 • 8)] – 1 [ 2 + 48] – 1 (complete parenthesis) [50] - 1 (Add) 49 (Simplify) Ex 4: 10 ÷ [9 – (2 • 2)] 10 ÷ [9 – ( 4)] (complete parenthesis) 10 ÷ [5] (complete parenthesis) 2 (simplify by dividing)

Let’s Practice! 53−15 17−13 Find the value of each expression: 6 (2+9) – 3 • 8 53−15 17−13 (answers on next slide!)

Let’s check our answers! Find the value of each expression: 3 + 4 x 5 3 + 20 (multiply) 23 (simplify) 2) 6 (2+9) – 3 • 8 6 (11) – 3 • 8 (complete parenthesis) 66 – 24 (complete each multiplication) 42 (simplify) 53+15 17−13 = (53 +15) ÷ (17-13) (rewrite as division problem) (68) ÷ (4) (simplify each parenthesis) 17 (divide)