Homework Help: math

Posted by shay on Thursday, February 9, 2012 at 3:21pm.

What is
-16 + -8 x -2 -(4-9)= ?

I did it and got -72. I want to know if I'm right. I'm so confused with operations. Would you subtract the numbers and add, then multiply?

math - Ms. Sue, Thursday, February 9, 2012 at 3:30pm
Remember PEMDAS

parentheses
exponents
multiply
divide
add
subtract

http://www.mathsisfun.com/operation-order-pemdas.html

-16 + -8 x -2 -(4-9)=

Parentheses: (4 - 9) = -5

-16 + -8 x -2 -(-5)=

Exponents: none

Multiply: -8 * -2 = 16

-16 + 16 -(-5)=

Divide: none

Add/Subtract

-16 + 16 + 5 = 5
math - shay, Thursday, February 9, 2012 at 7:07pm
Thank you

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