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Multiply Positive and Negative Numbers August 26, 2015.

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Presentation on theme: "Multiply Positive and Negative Numbers August 26, 2015."— Presentation transcript:

1 Multiply Positive and Negative Numbers August 26, 2015

2 Rules of Multiplication If the numbers have the SAME sign, the answer is POSITIVE If the numbers have DIFFERENT signs, the answer is NEGATIVE

3 Solve. Example 1: 9 * 8 = Example 2: (-2) x (-17) = Example 3: 3 12 (-4) = Example 4: (-2.5)(-3.5) =

4 What’s Missing 1)Positive x __________ = Positive 2)________ x Negative = Positive 3)Negative x Positive = _________ 4)Positive x __________ = Negative

5 What’s Missing Example 5: -7 x = -28 Example 6: x -6 = 48 Example 7: -4 (9) = Example 8: x -2 = -18

6 Dividing Positive and Negative Numbers August 26, 2015

7 Rules of Division If the numbers have the SAME sign, the answer is POSITIVE If the numbers have DIFFERENT signs, the answer is NEGATIVE

8 Solve.

9 Class Work Workbook Page 205

10 Journal 8-26-15 Explain how you would decide whether the product of three numbers is positive or negative

11 Homework Workbook Page 205 1 – 8 ALL 9 – 28 ODD


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