Multiplying and dividing positive and negative numbers Slideshow

Multiplying and dividing positive and negative numbers Slideshow 5, Mr Richard Sasaki

Objectives • Multiplication and division drill • Learn rules for multiplying negative numbers • Learn rules for dividing negative numbers • Practice multiplying and dividing negative numbers You have four minutes to complete the drill, good luck!

Multiplying with Negative Numbers Rules for multiplying negative numbers are similar to adding or subtracting. Example

Multiplying with Negative Numbers Example Basically, if we multiply a negative number by a positive, we get a negative. Example When we multiply a negative number by another, the answer will be positive.

Dividing Negative Numbers Dividing has exactly the same rules. Examples It doesn’t make any difference which number in the calculation is negative. If one is negative, the answer will be negative.

Dividing Negative Numbers Like multiplication, if we divide a negative number by another, our result is positive. Examples

Brackets As you know, you calculate what is in brackets first. But sometimes, we have many brackets. Example It looks confusing doesn’t it. How can we make this look better?

Brackets If we have more levels, we can repeat these and change the size of the brackets.