Percent of Change
The price of a basketball increased from $40 to $50. What is the percent of increase?
25 % increase
10/40 = 25%
A store buys a pair of jeans for $30 and marks them up 40%. What is the selling price?
$42
Kiara deposits $500 in a savings account at 4% annual interest for 2 years. How much interest will she earn?
$40
A student measures a pencil to be 15 cm, but the actual length is 16 cm. What is the percent error?
6.25%
A school’s student population dropped from 600 students to 510. What is the percent of decrease?
15 % decrease
90/600 = 15 %
A video game originally costs $50. The store marks it down 20%. What is the sale price?
$40
Brad invests $800 at 5% annual interest for 3 years. How much interest does he earn?
$120
You estimate a football field is 100 yards long, but it is actually 95 yards. What is the percent error?
5.26%
A video game originally cost $60, but now it costs $45. What is the percent of change?
25 % decrease
15/60 = 25 %
A store pays $15 for a hat. If the markup is 60%, what is the selling price?
$24
Sarah takes out a $1,000 loan at 6% annual interest for 4 years. How much interest does she pay?
$240
A scientist predicts a rock weighs 2.5 kg, but its actual weight is 2.3 kg. What is the percent error?
8.70%
A runner improved their mile time from 8 minutes to 6.5 minutes. What is the percent of decrease?
18.75 % decrease
1.5/8 = 18.75 %
A bike is originally $200, but it is marked down 35%. What is the new price?
$130
John deposits $1,200 into a savings account at 3% annual interest for 5 years. How much interest does he earn?
$180
Where did Mr. Friesz go to high school? Hint the school's name starts with an "F".
Flasher High School
A T-shirt was $20 and now costs $25. What is the percent of increase?
25 % increase
5/20 = 25%
Mr. Friesz is a college football player for DSU. What number does he wear?
#12
A car loan is $5,000 at 7% annual interest for 2 years. How much interest is paid?
$700
A student guesses a jar contains 80 marbles, but it really has 100 marbles. What is the percent error?
20%