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Percentages

Percentages are values that are used to compare numbers to 100. All percentages equal the number divided by 100.

For example, 35% means 35 out of 100. So, you could express it as 35/100, which could then be simplified to 7/20. You could also write 35 out of 100 as a decimal, 0.35.

 20%

Question 1 of 5

Mini-test: Percentages - Proportions - and Percents Combined Lessons 

A roof slopes downward 6' per foot.  What is the percent slope and the drop over a 10ft run?
A.
B.
C.
D.
E.

Question 1 of 5

Question 2 of 5

A soup recipe calls for 3 cups of water for every 2 cups of vegetables.  What percent of the soup volume is water, and how many cups of vegetables are needed for 45 cups of soup?
A.
B.
C.
D.
E.

Question 2 of 5

Question 3 of 5

A school has 5 boys for every 7 girls. What percent of the school is male, and how many girls make up a 240-student school?
A.
B.
C.
D.
E.

Question 3 of 5

Question 4 of 5

A $25 item costs $17.50 to make.  Each $10 of sales earns how dollars in profit?
A.
B.
C.
D.
E.

Question 4 of 5

Question 5 of 5

Costs include $240 labor for every $320 in material.  what percent of costs is labor?
A.
B.
C.
D.
E.

Question 5 of 5


 

Next Lesson: Ratios and Percentages

The following transcript is provided for your convenience.
So, percentages, again, are just that number out of 100.

Let’s take 85%. 85% means 85 out of 100, which can also be simplified to 17/20, and 0.85 can be written as a decimal, 0.85.

Next Lesson: Ratios and Percentages