1. A3 1.1c To Multiply & Divide Positive & Negative Numbers
A3 1.1c To Multiply & Divide Positive & Negative Numbers

2. LESSON:
Multiplying an dividing positive and negative numbers works like this:
No negative sign = + answer Ex: 2 * = 14
One negative sign = – answer Ex: 3 * (– 4) = –12
Ex: (– 5) * (5) = –25
Two negative signs = + answer Ex: (– 6) * (– 4) = 24
Three negatives =
Four negatives =
Five negatives =
What is the pattern?
Can you make a rule?
– answer
+ answer
– answer

3. Try:
8 * (– 7) = ______
(– 3) * = ______
(– 10) * (– 8) = ______
Do 1 through 6 on W-14
Work the rest of the problems for homework (not including the fractions.)
– 56
– 27
– 80

4. The rules for dividing are the same as for multiplying.
Try:
(– 7) = ______
(– 63) = ______
(– 160) (– 8) = ______
Do 1 through 21 on W-16
Look at # 28:
Do 29 through 31 for your assignment.
– 4
– 7 20
Sun
Mon
Tue
Wed
Thu
Fri
Sat
-4.0
-2.1
1.3
8.2
-3.0
-0.5
-0.6