Rule to Remember...Commit to Memory
If the signs are the SAME the answer will be POSITIVE
If the signs are DIFFERENT the answer will be NEGATIVE
Examples:
3(-3) = -9 3 times 3 is 9. The signs of the 3's are different, therefore the answer is a negative... -9
-4(-4) = 8 The signs are the same (both negative) that is why the answer is a positive...8
72/(-9) = -8 Again the signs are different, answer is negative... -8
-100/(-5) = 20 The signs are the same (both negative) that is why the answer is a positive...20
Positive x Positive = Positive
3 x 2 = 6
Negative x Negative = Positive
(-2) x (-8) = 16
Negative x Positive = Negative
(-3) x 4 = -12
Positive x Negative = Negative
3 x (-4) = -12
Positive ÷ Positive = Positive:
12 ÷ 3 = 4
Negative ÷ Negative = Positive:
(-12) ÷ (-3) = 4
Negative ÷ Positive = Negative:
(-12) ÷ 3 = -4
Positive ÷ Negative = Negative:
12 ÷ (-3) = -4
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