1. Multiplying and Dividing Rational Numbers 11/19/15
The Golden Rule of Multiplying and Dividing
A negative symbol ( - ) means opposite
-3 • 5
Three groups of five is 15
The opposite of 15 is (-15)
16  -8
16 divided by 8 is 2
The opposite of 2 is (-2)

2. Multiplying and Dividing Rational Numbers 11/19/15
Shortcut:
(-28)  (-4)
28 divided by four is 7
The opposite of 7 is (-7)
The opposite of (-7) is 7
Multiplying/Dividing by the same sign = positive product/quotient
Multiplying/Dividing by different signs = negative product/quotient