1. Multiply Integers SWBAT multiply integers

2. Multiplication What is multiplication? What is multiplication? Repeated addition Repeated addition How do you think negative numbers will affect it? How do you think negative numbers will affect it? What does -8 x 4 look like? What does -8 x 4 look like? (-8) + (-8) + (-8) + (-8) (-8) + (-8) + (-8) + (-8) What do you get when you add them all together? What do you get when you add them all together? -32 -32

3. Multiplying Integers SignTimesSignEqualSign Positive+XPositive+= Negative-XNegative-= Negative-XPositive+= Positive + Positive + Negative -

4. Examples -75 x 0 -75 x 0 25 x -13 25 x -13 -15 x -12 -15 x -12 -7 x -9 x -4 -7 x -9 x -4 5 x -8 x -12 5 x -8 x -12 8 x |-9 + (-2) | 8 x |-9 + (-2) |

5. Do the Try These problems on your paper -5 x 9 -5 x 9 - 45 - 45 8 x 12 8 x 12 96 96 -9 x 15 -9 x 15 -135 -135 -7 x -9 63 -3 x 4 -12 -10 x -5 50