A percent is a share out of , so “percent of a number” asks for a part of that number. Identify the whole after “of,” then enter the percent and whole directly in Desmos. Keep the percent sign: without it, you’re using an ordinary number rather than a share counted in hundredths.
Hints
- Hint 1
The whole is the amount counted as . In a phrase like “ of ,” the number after “of” is the whole. Which amount should you take a share of?
- Hint 2
A percent means “per hundred,” not a number of units to subtract. Keep the percent sign when you type the expression into Desmos, and put the whole after
of.
Step-by-step
Find the percent of the whole
Step 1Identify the whole and the part
A whole is the amount counted as . The phrase “of ” makes the whole, so take the percent of , not away from : . Subtracting would treat the percent as units.
- Step 2
Calculate the part
Type in Desmos. It shows , the part of requested. So of is . Choice B.