Percent Change

Tickets to Disney World are $100.The price is going to increase on January 1. What is the percent of change if the cost increases to a $120?

• 25%
• 18%
• 20%
• 50%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

The number of people signed up for a bus trip increased from 32 to 45. What is the percent increase? Round to the nearest percent.

• 52%

• 38%

• 42%

• 45%

Tags

CCSS.7.RP.A.3

Miss Smith needed a new pair of gym shoes.  The original cost of the shoes was $120.00, but she was lucky and they were on sale for $69.98.  Calculate the percent change for her shoes (round to the nearest percent).

• 42%
• 50%
• 70%
• 73%

Tags

CCSS.6.RP.A.3C

A pair of shoes was priced $35, but were on sale for $25. What is the percent of discount?

• 71%
• 29%
• 70%
• 10%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

A team of biologists used population sampling to determine that there are currently 350 chameleons living in a particular ecosystem. That same ecosystem had a population of 580 chameleons three years ago. Which is closest to the percent decrease in the chameleon population?

• 230%

• 40%

• 66%

• 28%

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.3

In 1991, the US Fish and Wildlife Services estimated that as many as 8,000 spotted owls lived in the Northwest woods. A recent population sampling showed that the spotted owl population in the Northwest woods had increased to 12,000 after the implementation of a conservation program. By what percent did the spotted owl population increase?

• 0.5%

• 5%

• 50%

• 500%

Marine biologists who have been studying the great white shark population off the coast of California have discovered that the number of great white shark sightings in areas commonly frequented by beach-goers have increased dramatically over the last 10 years. In 2000, there were 17 sightings of great white sharks. In 2010, there were 32 sightings of great white sharks. Which is the best estimate of the percent change in the number of great white shark sightings?

• 15%

• 88%

• 47%

• 24%

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.3

A group of wildlife conservationists are trying to determine what is causing a recent decrease in the number of white-tail deer in a particular area. Two years ago, they estimated the population to be 680. Recently, the population was estimated to be 410. Which is closest to the percent of change in the white-tail deer population?

• 40%

• 66%

• 270%

• 54%

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Following the recent expansion of a housing development and shopping center in Arizona, a rattlesnake population has been dwindling. Prior to the construction, the population of rattlesnakes in the area was estimated to be at 453. Following the construction, the population of rattlesnakes in the area was estimated to be at 284. Which is the best estimate of the percent decrease in the snake population?

• 169%

• 37%

• 60%

• 18%

200 children attended the school play. Of the total attendance, 40% were boys. How many girls attended the school play?

• 800
• 180
• 80
• 120

Tags

CCSS.6.RP.A.3C