Percent Increase
Find the amount increase.
What is step 2 of percent error?
Divide by the ACTUAL
What is step 3 for finding percent increase/decrease and error?
Multiply by 100
If a crocodile grows from 32 inches to 36 inches, is that increase or decrease?
INCREASE but also AHHHH!
The manufacturers of M&Ms decided to do a promotion where they increased the number of M&Ms in a package from 85 to 120. Rounded to the nearest percent what is the percentage increase did this promotion represent for the consumer?
41%
A measurement was 34.5 m. The accepted value is 36.7 m, This is the percent error of the measurement?
5.99% error
A shirt was $36.00 and is now $25.00. What is the percent decrease?
30.5%
Each week, Mr. Jones goes to the grocery store. Mr. Jones estimates that he will spend $120 when he goes to the grocery store this week. he actually spends $94. Find the percent of error.
28%
Movie Tickets used to be $8.00 and now they are $12.95. How much did the price increase?
$61.88
Eva estimates that 475 songs will fit on her MP3 player. The actual amount of songs that fit is 380. Find the percent of error.
25%
Suppose the original quantity is 160 and the new quantity is 104. What is the expression for the percent decrease? What is the percent decrease?
(160-104) / 104, and 35%
What's is Ms. T's Favorite Color?
Blue
Find the percent increase: 140 is increased to 273
95%
Tray estimates that a new car will cost him $11,300. It actually cost him $10,800. What is the percent of error rounded to the nearest tenth?
4.6%
A bicycle priced at $300 goes on sale for $180. What is the percent change? Was it an increase or decrease?
40% decrease.
A custom estimates a computer at an electronics store is $1099. Determine the percent of error in price if the actual price is $1349. Round to the nearest whole percent.
19%
Last year the 7th grade had 280 students. This year the number changed to 350 students. What was the percent change? Was it an increase or decrease?
25% increase.
Rodney want to practice free-throws. He estimates the distance from the free-throw line to the hoop and marks it with chalk. Rodney's estimate was 13.5 feet. The actual distance should be 15 feet. Find the percent of error.
10%
A bus ticket normally costs $45. As a special offer, the price is reduced to $27. What is the percent change? Was it an increase or decrease?
40% decrease.
Last school year the enrollment at Genoa Middle School was 465 students. This year the enrollment is 525. Find the percent change.
13%