multiply positive and negative numbers august 26, 2015
TRANSCRIPT
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Multiply Positive and
Negative Numbers
August 26, 2015
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Rules of Multiplication• If the numbers have the
SAME sign, the answer is POSITIVE
• If the numbers have DIFFERENT signs, the answer is NEGATIVE
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Solve.
Example 1: 9 * 8 =
Example 2: (-2) x (-17) =
Example 3: 3 • 12 • (-4) =
Example 4: (-2.5)(-3.5) =
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What’s Missing1)Positive x __________ = Positive
2)________ x Negative = Positive
3)Negative x Positive = _________
4)Positive x __________ = Negative
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What’s Missing
Example 5: -7 x = -28
Example 6: x -6 = 48
Example 7: -4 (9) =
Example 8: x -2 = -18
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Dividing Positive and
Negative Numbers
August 26, 2015
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Rules of Division• If the numbers have the
SAME sign, the answer is POSITIVE
• If the numbers have DIFFERENT signs, the answer is NEGATIVE
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Solve.
• Example 9: 36 ÷ (-9) =
• Example 10: (-42) ÷ (-3) ÷ 7 =
• Example 11: =
• Example 12: =
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Class Work
•Workbook
•Page 205
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Journal 8-26-15Explain how you would decide whether the product of three numbers is positive or negative
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Homework• Workbook
• Page 205
• 1 – 8 ALL
• 9 – 28 ODD