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 Missing1)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.

• Example 9: 36 ÷ (-9) =

• Example 10: (-42) ÷ (-3) ÷ 7 =

• Example 11: =

• Example 12: =

Class Work

•Workbook

•Page 205

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

Homework• Workbook

• Page 205

• 1 – 8 ALL

• 9 – 28 ODD