Question

for each of the situations below, choose the action that will make the calculation work.
in each case, the units for each input and the result are given in parentheses ().
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 concepts lesson.

a local charity organizes a canned - food drive and collects a large number of cans of food that will be equally divided among the families that apply for assistance. choose the action that the charity organizers should use to calculate how many cans each family will receive.
families applying (families)
cans of food (cans)
cans per family (cans/family)

marissa wants to know
marissa should use to c
points in game 1 (pts)
points in game 2 (pts)

a school principal needs to determine how many students missed an assembly by comparing the roster of total students to the number counted at the assembly. choose the action that the principal should use to do this calculation.
students present at assembly (students)
total students on roster (students)
students absent (students)

susannah is trying to calculate how many bus rides she must take in order for an unlimited bus pass to be worthwhile. choose the action that susannah should use to do this calculation.
normal cost per ride ($/ride)
number of rides (rides)

Explanation:

Step1: Charity Cans Calculation

To find cans per family, divide total cans by number of families. This is equivalent to making a conversion factor of $\frac{1}{\text{families}}$ and multiplying by total cans, so the action is:
make conversion factor

Step2: Basketball Points Calculation

To find total points from two games, sum the points from each game.
add

Step3: Absent Students Calculation

(Already selected correctly: subtract total students by present students to find absent students)
subtract

Step4: Bus Rides Calculation

To find the number of rides needed, we divide the cost of the unlimited pass (implied input, paired with cost per ride) by cost per ride, which uses the cost per ride as a conversion factor to turn dollars into number of rides.
use conversion factor

Answer:

1. Charity cans calculation: make conversion factor
2. Basketball total points calculation: add
3. Absent students calculation: subtract
4. Bus rides calculation: use conversion factor