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Percent of a Number Test 2
Con il contributo di: Nativity
Percent of a Number

Part II
Congratulations - you made it to Part II.

Here you will learn how to set up percent
proportions regardless of how they are written.

There are three ways a percent equation may be
written.  Copy these three examples into your
notebook:
What is 12% of 200?

32 is what percent of 400?

58 is 30% of what number?
Now, notice that in each sentence, there is...
A percent
An "IS" word
An "OF word
What is 12% of 200?

32 is what percent of 400?

58 is 30% of what number?
What???  An IS word...and OF word...I don't get it.

Okay, slow down here and take a deep breath.  Let's
look for the percents first...Look below and see
that I've underlined each percent.
Now do you see them?
What is 12% of 200?

32 is what percent of 400?

58 is 30% of what number?
For the first one, it's 12%, the last one is 30%...but
what about the middle one...it doesn't list a percent!

You're right - that becomes the "x" in the proportion!
What is 12% of 200?

32 is what percent of 400?

58 is 30% of what number?
Time to find the IS words...Look again at the example.
See them now?

Again, the 'what' becomes the x in the proportion.
What is 12% of 200?

32 is what percent of 400?

58 is 30% of what number?
Time to find the OF words...Look again at the example
See them now?

Again, the 'what' becomes the x in the proportion.
What is 12% of 200?

32 is what percent of 400?

58 is 30% of what number?
Time for you to try.  List the value for each part...
if there is no value (it's a what), then list the answer
as x.

The first one is done for you:

What is 6% of 72
Percent:
OF:
IS: 
x
72
6
Notice I  am NOTincluding
the percent sign!
52 is what percent of 78?
IS:


OF:


Percent:
What is 50 percent of 42?
IS:


OF:


Percent:
52 is 12 percent of what number?
IS:


OF:


Percent:
15 is what percent of 89
IS:


OF:


Percent:
34 is 14 % of what number?
IS:


OF:


Percent:
This ends Part II of this class. 

Again, you have to achieve a perfect score
before moving forward.  If you made a mistake
please slow down and take this step by step -
you can do it!
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