Multiply Positive and Negative Numbers August 26, 2015.

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Presentation transcript:

Multiply Positive and Negative Numbers August 26, 2015

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

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

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

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

Dividing Positive and Negative Numbers August 26, 2015

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

Solve.

Class Work Workbook Page 205

Journal Explain how you would decide whether the product of three numbers is positive or negative

Homework Workbook Page – 8 ALL 9 – 28 ODD