All HSPT Math Resources
Example Questions
Example Question #3 : How To Find The Whole From The Part With Percentage
32 is % of what number?
We can rewrite % as 2.5%. 32 is 2.5% of a number , or, equivalently, 0.025 multiplied by a number is equal to 32. We can write this as an equation and solve for :
Example Question #571 : Arithmetic
3,200 is 160% of what number?
Set up the proportion statement and solve for by cross-multiplying:
Example Question #572 : Arithmetic
12 is of what number?
Set up the proportion statement and solve for by cross-multiplying:
Example Question #573 : Arithmetic
Convert into a decimal.
To covert a percent to a decimal, simply remove the percent sign and divide by 100.
Example Question #574 : Arithmetic
What percentage of is ?
Set up an equation that represents this scenario. The question asks what percent of a number is another number. Keep in mind, the percent of a number is over 100.
or
We can reduce to by dividing both the numerator and the denominator by
Now we want to isolate the x by itself. First we multiply each side by
Then divide each side by .
Check: Does of equal ?
The correct answer is:
Example Question #575 : Arithmetic
Add the percentages and find the answer in decimal:
Add the percentages.
To turn the answer into decimal form, simply divide by 100 or move the decimal place back two units to the left and remove the percentage sign.
The answer is:
Example Question #54 : Percentages
What is of ?
Rewrite as a fraction.
Multiply this value with two.
Example Question #574 : Concepts
Add the percentages:
Add the ones digit.
The ones digit is two.
Carry over the tens digit since this number is ten or greater.
Add the tens digits with the carryover.
The hundreds and the tens digit is one.
The answer is:
Example Question #576 : Arithmetic
What is of ?
Six percent is six out of a hundred parts.
Multiply this with 30.
Example Question #576 : Concepts
Rewrite as a decimal or fraction.
Multiply either value with .