Positive x positive
Negative x positive
Negative x Negative
100

1/3 x 2/3

2/9

100

1/5 x - (1/3)

-1/15

100

- (1/3) x - (2/3) 

2/9

200

4/5 x 2/3

8/15

200

-(1/3) x 2/5

-2/15

200

-5/10 x - 6/10

30/100 3/10

300

4/2 x 3/3

12/6= 2

300

-(6/12) x (2/2)

-12/24 = -1/2

300

-2/4 x -4/5

8/20= 4/10=2/5

400

1/3 x 5/8

5/ 24

400
-(1/5) x (2/3)

-2/15

400

-(1/5) x (-4/5)

4/25

500

2/5 x 1/3

2/15

500

(8/10) x - (3/5) 

-24/50 = -12/25

500

-(1/6) x - (2/2)

2/12 =1/6

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