Chap 2: Real Numbers - Rational Number

I do not agree as 

3/6=1/2

1/2=0.5

0.5 is a terminating decimal  

Math Real Numbers activity 3

 Q2:
a)positive
b)positive
c)negative
d)negative
 Q3:

(+) x (+) =(+)

(-) x (-) =(+)

(+) x (-) =(-)

(-) x (+) =(-)

• (+) / (+) =(+)
• (-) / (-) =(+)
• (+) / (-) =(-)
• (-) / (+) =(-)