Answer:
Step-by-step explanation:
11. I can't see the full problem statement, so I'm unable to answer the question.
12. Answer below:
"one half" = 
"negative five eighths" = 
To evaluate the expression, you multiply the two numbers together:

13. Answer below:
"one third" = 
"eleven sixteenths" = 
To evaluate the expression, you multiply the two numbers together
