In this introductory how - to video for pre-algebra, the lesson is simple and clear. You will learn the four basic rules for multiplying positive and negative numbers. You will be able to see the rules on the video screen and you will see two examples written on the white board. The video is short and only the basic explanation is given so you will not get lost in all the reasons behind the rules. This is a great video if you need a reminder on the rules for multiplication of positive and negative integers.

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