Percent Increase
Which word means a percent increase?
a. tax
b. wholesale
c. commission
d. Nolan's weight
Tax
Which word means a percent decrease?
a. tax
b. wholesale
c. commission
d. markdown
Betty guessed that a lemon would weigh 2.8 ounces. The lemon actually weighed 2.3 ounces.
What is the measurement error?
a. 2.8
b. 0.5
0.5
1 1/2
75%
A train is 40 feet long. Another train is 30% longer. How long is the second train?
52 feet
Chad’s kite string is 80 feet long. His friend has a piece of ribbon that’s 30% shorter than the kite string. How long is the ribbon?
56 feet
Alondra estimated the weight of her backpack to be 10 pounds, but it actually weighs 8 pounds. What was Alondra’s percent error?
25%
2 miles.
1. After a 10% increase, the price of a book is $22. What was the original price?
$20.00
A mountain trail is 9 kilometers long. A hiking path is 15% longer than the mountain trail. How long is the hiking path?
10.35
At a bookstore sale, everything is 10% off today. A cookbook is regularly priced at $30. What is the discount price?
$27.00
Marlene predicted that her phone battery would last 5 hours, but it actually lasted only 8 hours. What was Marlene’s percent error?
37.5%
A circular track has a perimeter of 1/2 mile. Lily runs on this track, completing each lap in 1/4 of an hour. How far does Lily run in 1 hour?
2 miles
A sweater costs $72 after a 20% discount. What was the original price before the discount?
$90.00
Chloe bought a plant that was 10 inches tall. After a month, it grew to 12 inches. What was the percent increase in the plant’s height?
20%
Today, a boutique is offering a 22% discount. A pair of jeans is regularly priced at $85. What is the discount price?
$74.80
Jonathan estimated that his new bike weighs 7.5 kg, but the actual weight is 6 kg. What was Jonathan’s percent error?
25%
A circular jogging path has a perimeter of 1/3 mile. Ethan jogs around this path, completing each lap in 1/8 of an hour. How far does Ethan jog in 1 hour?
8/3 or 2 2/3 miles
After a 15% increase, the population of a town is now 13,800 people. What was the original population?
12,000 people
George bought a rare comic book for $80. After six months, its value increased by 20%. Another year later, the value went up by an additional 25%. What is the final value of the comic book after both increases?
$120.00
Today, a fish store is offering an initial discount of 15% on all items. Then, another 10% was taken off the already discounted price for members. A very expensive fish is regularly priced at $120. What is the final price for a member after both discounts are applied?
$91.80
Noah measured the volume of his snack container to be 15.4 liters. However, the actual volume of the container is 16.2 liters. What is the percent error for Noah’s measurement?
4.93%
A circular walking path has a perimeter of 3/7 mile. Vanessa walks around this path, completing each lap in 1/10 of an hour. How far does Vanessa walk in 1 hour?
30/7 or 4 2/7 miles.
A laptop is on sale for $360 after a 20% discount. What was the original price of the laptop before the discount?
$450.00