1. Accentuate the Negative Investigation 3
Multiplying and Dividing Integers ÷ ÷ X X

2. 3.1-2 Introducing Multiplication of Integers
And
Division
Algorithm
Example
Same Signs
Product is positive
Quotient is positive
2 x 3 = 6
-2 x -3 = 6
12 ÷ 2 = 6
-12 ÷ -2 = 6
Different Signs
Product is negative
Quotient is negative
2 x -3 = -6
-2 x 3 = -6
12 ÷ -2 = -6
-12 ÷ 2 = -6

3. ‘Multiplication’ Flap of Foldable
Left side
Same Signs
Product is Positive
Ex. 2 x 5 = 10
Ex. -6 x -3 = 18
Right side
Different Signs
Product is Negative
Ex. -7 x 3 = -21
Ex. 2 x -1 = -2

4. ‘Division’ Flap of Foldable
Left side
Same Signs
Quotient is Positive
Ex. 12 ÷ 4 = 3
Ex. -15 ÷ -3 = 5
Right side
Different Signs
Quotient is Negative
Ex. -20 ÷ 10 = -2
Ex. 45 ÷ -15 = -3

5. Same Signs
Product is Positive
Ex. 2 x 5 = 10
Ex. -6 x -3 = 18

6. Different Signs
Product is Negative
Ex. -7 x 3 = -21
Ex. 2 x -1 = -2

7. Same Signs
Product is Positive
Ex. 2 x 5 = 10
Ex. -6 x -3 = 18

8. Different Signs
Product is Negative
Ex. -7 x 3 = -21
Ex. 2 x -1 = -2

9. Same Signs
Product is Positive
Ex. 2 x 5 = 10
Ex. -6 x -3 = 18

10. Different Signs
Product is Negative
Ex. -7 x 3 = -21
Ex. 2 x -1 = -2

12. Same Signs
Quotient is Positive
Ex. 12 ÷ 4 = 3
Ex. -15 ÷ -3 = 5

13. Different Signs Quotient is Negative Ex. -20 ÷ 10 = -2

14. Same Signs
Quotient is Positive
Ex. 12 ÷ 4 = 3
Ex. -15 ÷ -3 = 5

15. Different Signs Quotient is Negative Ex. -20 ÷ 10 = -2

16. Same Signs
Quotient is Positive
Ex. 12 ÷ 4 = 3
Ex. -15 ÷ -3 = 5

17. Different Signs Quotient is Negative Ex. -20 ÷ 10 = -2