Section 1.5 Order of Operations Crud!. PEMDAS  Parenthesis (_)  Exponents b E  Multiply and Divide * and /  Go from left to right  Add and Subtract.

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Section 1.5 Order of Operations Crud!

PEMDAS  Parenthesis (_)  Exponents b E  Multiply and Divide * and /  Go from left to right  Add and Subtract + and –  Go from left to right

Look for Separators  Since add and subtract is the last thing you do, we will use these as separators (not including + & - signs in parenthesis  Identify the separators, but don’t solve:  / 3  4(8-3)/5-2  2(4+1) /2  5c+(a-b) 2 + 3c -8(y-3) – t(r+7)+7

PEMDAS Examples  Simplify: (8-2) -12  10  Simplify: (5-1)-3  21  Evaluate: 2x + (x-y) 3 when x = 9 & y = 7  26

Try It  4*(8-3) / 5 -2 2222  ( 6-1) 2 / 5  31  (a-b)2 + 5c when a=7, b=2, and c =4.  45  Should we do a few more?

Homework 1.5  1 thru 44 EOO  Problems 12, 22, 28, 32, 36, 42, 44, 47  Chapter Review