## Multiplying & Dividing Positive & Negative Numbers

Multiplying & Dividing Positive & Negative Numbers
• Currently 4.0/5 Stars.
6423 views, 2 ratings - 00:10:54
Part of video series Operations with Integers
Taught by YourMathGal

### Meets NCTM Standards:

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Shows the rules for multiplying and dividing negative and positive numbers. Shows why negative times negative produces a negative number using counters.

• Demolition Division - Game from Math Game Time: This game helps students learn division. Tanks with division problems move toward your blaster. Answers are located at the bottom of the blaster. Fire away at the tank with the correct answer. Move fast before your blaster is destroyed by a tank.
• How do you multiply and divide integers?
• When you are multiplying and dividing positive and negative numbers, how do you know when the answer is positive or negative?
• What happens if a positive or negative number is multiplied by 0?
• What happens if 0 is divided by a positive or negative number?
• What happens if you divide a number by 0?
• What are the rules for determining whether the result will be positive or negative when multiplying and dividing numbers?
• Where can I find a bunch of example problems for deciding whether the answer to a multiplication or division problem is positive or negative?
• How do you know if -1*-2*-3*-1*-5 will be positive or negative?
• How can you figure out what (-8*4)-2 equals?
• Why does a negative times a positive make a negative?
• Why do two negative numbers multiply to make a positive?
• Why does -3 * -2 equal positive 6?
A whole bunch of problems of multiplying and dividing integers are explained in this problem. First, we figure out whether the answer will be positive or negative, and then we find the answer. Some problems have multiple numbers multiplied together. This lesson also explains why multiplying positive and negative numbers ends up the way it does.
• Currently 4.0/5 Stars.
Reviewed by MathVids Staff on October 10, 2009.
dividing integers is a lot of steps!!!!!!
• Currently 4.0/5 Stars.
Reviewed by squeaky78 on September 29, 2010.  