+ Three and Four Operations with Positive and Negative Numbers.

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Presentation transcript:

+ Three and Four Operations with Positive and Negative Numbers

+ Rules of Operations Rule 1: First perform any calculations inside parentheses. Rule 2: Next perform all multiplications and divisions, working from left to right. Rule 3: Lastly, perform all additions and subtractions, working from left to right.

Please Excuse My Dear Aunt Sally

+ Problem 1 -3 x ( ) ÷ 2

+ Problem ÷ ((8 - 3) x (2 + 6)) ÷ 2

+ Problem 3 (5 x 8) + (6 ÷ 6) – (-12 x 2) – (3 x 12)

+ Problem ÷ ((4 + 3) x (3 + 5)) ÷ 3

+ Problem 5 A caterer charges a setup fee of $50, plus $20 per person. How much will the caterer charge each person paying the bill if 35 people attend the party, and the 3 customers paying the bill have a coupon for $100 off the total?

+ Problem 6 Mr. Smith charged Jill and Maria $60 for parts and $15 per hour for labor to repair their bicycles. If he spent 3 hours repairing their bikes: How much does Jill owe him? How much does Maria owe him?