"Complete each of the tables below in order. You must enter formulas for each of the empty cells. When you have a formula that calculates the correct value, the cell will change to green to let you know. The green color only tells you about the value calculated, not the formula or the formatting.

The numbers will change every time you enter a new formula, or when you tell Excel to recalculate. $($by pressing F$9$ on Windows machines or COMMAND and the equals sign on Macs$)$ You should tell Excel to recalculate often to be sure that your formulas work properly."