Percent Review

Percent of a Number

100

What is 10% of 75?

7.5

200

What is 15% of 30?

4.5

300

What is 125% of 62?

77.5

400

What is 5% of 20?

1

500

What is 0.5% of 45?

0.225

Percent Increase/Decrease

100

Maya score a 55 on her last test. This test she scored a 72. What was her percent increase.(Round to the nearest percent).

31%

200

Last week the Seahawks won by 3 points. This week they won by 14 points. What was there percent increase? (round to the nearest percent)

367% increase

300

The hat costs $12 last week. This week it is on sale for $10. What was the percent decrease? (round to the nearest percent)

17% decrease

400

Last year my dog's food cost $25.99. This year it costs $34.55. What was the percent increase? (round to the nearest percent)

33% increase

500

The strongest wind gust we had last year was 37mph. The strongest wind gust recorded this year was 33mph. What was the percent decrease in the strongest wind gust? (round to nearest percent)

11%

Mark-up and Mark-down

100

A bike priced at $125 went on sale for 30% off. What is the new sales price?

$87.50

200

A toaster has a 45% mark-up from its wholesale cost. If it costs $15 wholesale, what is the sales price after the mark-up? 

$21.75

300

A highly valued trading card goes on sale. It is originally priced at $750.00. It is on sale at 20% off. How much is the item discounted?

$150.00

400

A new set of tires has a mark-up of 150% from its manufacturing price. If it costs $300 to make the set of tires, what is the mark-up amount?

$450.00

500

A new stand-mixer sales for $425.00. The store is offering a 15% discount to customers using the store credit card. How much will you pay if you use the store credit card?

$361.25

Percent Equation

100

Write the equation to find 15% of a number. Use C for the new number, and b for the original number. 

C=0.15b

200

Noelle wants to know what 25% of 65 is. Write an equation to help her figure out the cost. Use C for the new number. 

C=0.25(65)

300

Write two equations to find 150% of a number. Use C for the new number and b for the original number. 

C=1.5(b) 

or

C= 1b +0.5b

or

C=(1 + 0.5)b

400

Write two equations to find a decrease of 15% from a number. Let C equal the new number, and b the original number. 

C = 0.85b

C=1b-0.15b

C=(1 - 0.15)b

500

Write 3 equations that show a 5% increase in price. Where C is the new price, and b is the original price. 

C=1.05b

C=1b+ 0.05b

C=(1+0.05)b

Decimal to Percent/Percent to Decimal

100

Turn 35% to a decimal

0.35

200

Turn 0.76 into a percent

76%

300

Turn 425% into a decimal

4.25

400

Turn 2.45 into a percent

245%

500

Turn 0.08% into a decimal

0.0008