Multiply and Divide Integers
Math
Learning on how to multiply and divide integers
Today we're going to talk about how to multiply and divide integers. When we have both positive and negative integers, there are a few rules we can remember. If we have two positives or two negatives, our answer is also going to be positive. So take a look at these few examples. Here we have negative 6 times negative 6. So we can see from our little smiley faces. The smiley face with the two negative signs for highs equals positive. So we know two negatives equals a positive. Just like two positive equals positive. So negative 6 times negative 6 is actually positive 36. And now four times 6, nothing really special. We have to remember here. It's just a standard multiplication problem in our answers 24.
Now on the other hand, you can see our frowny faces, if one of our numbers is a negative, our answer is going to be negative. So a negative 8 times 6 is a negative 48. And a 5 times a negative 7 is a negative 35. Okay, here are some more practice problems. What do we know about two negatives for our first one? Two negatives equal positive. So automatically, I know my answer is going to be positive. So three negative three times negative four. My answer is going to be 12. Now what I like to do, take a look at this next problem where I have one negative, I know my answer is going to be negative, even before I write down my answer, I put down the negative sign to remind myself of that. I think sometimes people just forget the negative sign. And they focus on the multiplication problem. So negative four times 6 is a negative 24. Again, for this next one, I'm not going to I'm going to think about is my answer positive or negative. Two negative so my answer is positive.
Now I just multiply two and 8, which is 16. For the last one, I have one negative. So again, I'm putting that negative sign down. First, 6 times negative ten is a negative 60. So these were just a few examples of multiplying negative and positive integers. Always remember you can refer back to your interactive notebook for that graphic with the smiley faces to help you on any of your assignments. If you have any questions as always, be sure to either ask in class or check out the additional videos on my teacher tube.