Percent Proportions
Percent Equations
Percent of Change
Percent of Error
Combination
100

6 is 5% of what number?

120 

100

What percent of 50 is 46?

92%

100

Ms Thomas bought some stock for $15 a share and sold it at $20 a share. Find the approximate percent of change in the price of the stock.

33.3% increase 

100


The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?

20% error 

100

What is 56% of 89?

(Use any method) 

49.8

200

What is 32% of 50

16

200

Bruce spent $30 on lunch. If he had $55 in his wallet, what percent of his money did he spend on lunch?

55%

200

Wal Mart sold 100 CD's during the month of October and only 60 during the month of November. Find the percent of decrease in the amount of CD's sold during the last two months.

40% 

200

Zed went to the store and bought a bag of chips.  He estimated there would be 350 chips in the package, but realized there were only 210 chips in that package.  What was his approximate percent error?

67% error 

200

Ariana guessed that there were 43 gummy worms in a bag and there were 38 in the bag. What is her percent of error to nearest whole percent?

13% error

300

Find 12.5% of 60

7.5

300

12% of the students at Hamilton Middle School have red hair. There are 400 students at Hamilton Middle School. How many students at Hamilton Middle School have red hair?

48

300

Jason had a salary change from $150 a week to $175 a week. What is the approximate percent increase of his salary?

16.7%
300

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the approximate percent error?

15.8% error 

300

74% of 28 is what number?

(Use any method)

20.7

400

What percent is 2.5 of 40?

6.25

400

29 is 67% of what number?

43.28 

400

Cody weighed 110 pounds when he started 6th grade but now weighs 150 pounds as a 7th grader. What is the approximate percent of increase in his weight?

36.4% 

400

Jessie estimates the weight of her cat to be 8 pounds. The actual weight of the cat was 10 pounds.  Find the percent error.  

20% error 

400

The price of computers decreased from $1500 to $1200. What is the percent of change in the price of the computers?

20% decrease 

500

20 is 60% of what number?

33.33

500

75% of 200 is what number?

150

500

In one year Angelica’s height went from 60 inches to 63 inches. What was the percent of increase in Angelica’s height?

5%

500

The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the approximate percent error?

17.4% error 

500

Bob hadn't weighed himself in awhile. He estimated he weighed 122 pounds but when he got on the scale, his weight was 138 pounds. What is Bob's percent of error to nearest whole number?

12% error