Positive × positive = positive
Example: 9 × 8 = 72
Negative × negative = positive
Example: (-12)(-11) = 132
Positive × negative = negative
Example: (15)(-5) = -75
Example: 5 times Picksburg’s running back, "the Trolley," was stopped for a loss of 2 yards. How many yards did he lose? Answer: -10
Negative × positive = negative
Example: (-4)(11) = -44
Example: The Minnesota State golf team has 4 golfers that are each –6 (or 6 strokes under par) on their rounds for the day. What is the team score? Answer: -24
If there are an odd number of negative signs the answer is negative.
Example: (-5)(-2)(-7) = -70
If there are an even number of negative signs the answer is positive.
Example: (5)(-2)(-7) = 70