Percents Review

Percents Review

Percent

• Percent means out of 100

• Compares part to whole

• Percents can be larger than 100 or smaller than 1, but they always compare a number to 100

Converting Percents

• Change a percent to a fraction by putting the fraction over 100

• Change a percent to a decimal by moving the decimal point two points to the left

• 
  

Multiple Choice

Make the percent to decimal.

7%

• .007

• 0.07

• 7

• 70

Multiple Choice

Which fraction is equivalent to the following percentage?

39%

• 39/10

• 39/100

• 39/1000

• None of the above

Multiple Choice

Make the percent to decimal.

142%

• 1.42

• 14.2

• 142.

• 0.142

Percents, Decimals and Fractions

• Change a fraction to a decimal by dividing the numerator by the denominator.

• Change a decimal to a percent by multiplying by 100, or by moving the decimal point two points to the right.

Multiple Choice

Write 3/5 as a percent.

• 3%

• 30%

• 5%

• 60%

Multiple Choice

Convert 3/8 to a Percent

• 37.5%

• 3.75%

• .375%

Multiple Choice

Write 0.604 as a percent.

• 60.4%

• 604%

• 6.04%

• 0.064%

Percent of a Number

Multiple Choice

28 is 70% of what number?

• 35

• 40

• 50

• 55

Multiple Choice

What is 15% of 82?

• 12.3

• 123

• 1.23

Multiple Choice

125 is 50% of what number?

• 200

• 250

• 300

• 350

Percent Applications

Open Ended

Village Geek is selling a game system for 30% off. If the original price is $418 what is the sale price?

Set up the percent proportion and solve

Watch out (you might have an extra step at the end)

Multiple Choice

A pair of awesome skinny jeans costs $25, but it is on sale for 25% off. Score! If tax is 8%, what is the total cost?

• $18.75

• $20.25

• $27

• $22.50

Open Ended

Your parents took your family out to dinner. You parents wanted to give the waiter a 15% tip. If the total amount of the dinner was $42.00, what should be paid to the waiter as a tip?

Open Ended

Toby buys a new MP3 player for a price of $45.50. What is the total amount his credit card is charged if the sales tax is 7%?

Multiple Choice

Wilson Green sells home security systems. He earns an 11 percent commission on every system he sells. Wilson’s sales for this month totaled $4265. What is Wilson’s commission?

• $18,750

• $46,915

• $4,691.50

• $387.72