Answer:
A. 
Step-by-step explanation:
Each mark represent 0.1 unit, so if you count from 0 to
you get 0.5 that is exactly the same that
(for convention the left of the 0 is taken as negative and the right as positive).
Answer:
5/6
Step-by-step explanation:
1/2 times by 3 = 3/6
1/3 times by 2 = 2/6
then add these together to get 5/6
? = 5.8
-3.3 - 5.8 = 2.5 or 2 1/2