6th Grade Quiz: Mastering Percent Increase and Decrease

A shirt originally costs $40. If it is on sale for 25% off, what is the sale price of the shirt?

• $20

• $25

• $35

• $30

A population of a town increased from 2,000 to 2,400 people. What is the percent increase in the population?

• 15%

• 25%

• 10%

• 20%

A bike was purchased for $150 and later sold for $120. What is the percent decrease in the price of the bike?

• 20%

• 25%

• 30%

• 15%

A student scored 80 out of 100 on a test. If the student improves their score by 15%, what will their new score be?

• 95

• 85

• 90

• 92

A car's value decreased from $20,000 to $15,000. What is the percent decrease in the car's value?

• 20%

• 30%

• 25%

• 15%

A store had 500 items in stock. After a sale, 20% of the items were sold. How many items are left in the store?

• 300

• 450

• 400

• 350

A book was priced at $25 and is now $18. What is the percent decrease in the price of the book?

• 15%

• 20%

• 10%

• 28%

A garden had 150 flowers, and 30% of them died. How many flowers are still alive?

• 105

• 75

• 120

• 90

A restaurant's revenue increased from $10,000 to $12,500. What is the percent increase in revenue?

• 30%

• 15%

• 20%

• 25%

A laptop was bought for $800 and is now worth $600. What is the percent decrease in the laptop's value?

• 25%

• 15%

• 30%

• 20%