Quiz Practice (Percent Change & Simple Interest)

Mrs. Ciampa had 27 students in her class last year and this year she had 30 students in her math class. What is the percent of change?

• 24%
• 20%
• 11%
• 50%

Tags

CCSS.6.RP.A.3C

Last year the enrollment at Clark Middle School was 465 students. This year the enrollment is 525 students. What is the percent of increase?

• 113%
• 100%
• 13%
• 87%

Tags

CCSS.6.RP.A.3C

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.6.RP.A.3C

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

The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the sale price of the scooter? 

• 35%
• 25%
• 30%
• 20%

Tags

CCSS.6.RP.A.3C

The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?

• 16.67%
• 20%
• 2500%
• 80%

Tags

CCSS.6.RP.A.3C

An archaeologist estimated that a fossil was 520 years old. It was actually 500 years old. What was the percent error?

• 4%
• 20%
• 3.8%
• none of these

Tags

CCSS.6.RP.A.3C

Sam thinks the cost of the book is $50, but actually it's $56. What is Sam's percent of error?

• 10.7%
• 6%
• 12%
• 89%

Tags

CCSS.6.RP.A.3C

Alexton the Skeleton borrowed $4,000 for 5 years at 6% simple interest rate to pay for his band equipment. How much interest is that?

• $800

• $1,000

• $1,200

• $1,500

Tags

CCSS.7.RP.A.3

Emilio borrows $1200 from a bank with 8% simple interest per year. How much will he have to pay back total in 2 years?

• $150

• $192

• $1350

• $1392

Tags

CCSS.7.RP.A.3