Multiplying Positive and Negative Numbers

This video was contributed as part of the Macworld 2011-Next Vista for Learning 60-Second Video Contest. See the finalists here.

Other Math Videos

Duane Habecker shows how to add integers with the same sign
Adding Integers with the Same Sign (2)
Learn how to use PEMDAS for order of operations in math.
PEMDAS
Learn how to find the rate (distance/time) of an object.
Finding Rate (Distance/Time)
Duane Habecker demonstrates how to solve word problems that use percents
Solving Word Problems with Percents