Rules for Multiplying and Dividing Integers Intro to Algebra

Let’s Review What are integers? How do you add two positives? How do you add two negatives? How do you add a positive and negative? What is the first thing you should do when you have a subtraction problem, and how do you do it? What do we get if we add opposites?

Multiplying and Dividing Integers The rules are simple! Multiply or Divide the Numbers Normally Count the number of Negatives If the amount of Negatives is Even, Your answer is Positive! If the amount of Negatives is Odd, Your answer is Negative!

Here is a way to remember. To remember whether your answer will be positive or negative when multiplying or dividing two numbers, you can use Mr. Multiplivision!

To use Mr. Multiplivision You will use Mr. Multiplivision when multiplying or dividing two numbers, and at least one of them is negative. Cover up the two signs you are multiplying or dividing.

Determine if the answer will be positive or negative. (-5) · (-25) 16 · 24 (-48) ÷ (-7) (-2) · 18 72 ÷ (-9)