Question

inputs and operations
part 2 of 3 1 2 3 trying to earn
for the following questions, the right hand box shows what you are trying to calculate. use the 2 pull - down menus to:

• choose the inputs that when combined will give you the correct calculation
• choose the action needed to combine the inputs

note: which input is on the top or bottom does not matter.
tip: hold down one of the input pull - down menus to review your choices. for each question, the two input pull - downs have the same choices.
if you dont know what make a conversion factor and use a conversion factor mean in the pull - down menus, click the check answers button and read the lesson.
question 1: julie is trying to figure out the total number of pages in her book collection. choose the correct inputs and action.
dropdown menu arrow dropdown menu arrow total pages (pgs)
dropdown menu
question 2: chickie needs to calculate the total amount of electricity used. choose the correct inputs and action.
electricity use per hour (kw/hr) dropdown menu arrow make conversion factor dropdown menu arrow total electricity use (kw)
dropdown menu

Explanation:

Question 1:

To find total pages, you need two inputs: the number of books in the collection, and the average number of pages per book. The action to combine these is multiplication, since total pages = number of books × average pages per book.

Question 2:

To find total electricity use (kW), given electricity use per hour (kW/hr), the second input must be total hours of electricity use. The "make conversion factor" action will multiply the rate by time to get total usage, as total electricity = (kW/hr) × hours.

Answer:

Question 1:

Top input: number of books in collection
Bottom input: average pages per book
Action: multiply

Question 2:

Bottom input: total hours of electricity use
Action: make conversion factor (pre-selected)