Find the Percent Practice

Liam saw a pair of shoes last month that cost $45. When he went back to the store this month, the shoes now cost $65. Find the percent of change.

• 44% increase

• 44% decrease

• 31% increase

• 31% decrease

Gia saw a shirt last month for $12. When she went to the store this month, it was now $8. Find the percent of change.

• 33% increase

• 33% decrease

• 50% increase

• 50% decrease

Abby's Clothing Boutique buys coats for $50 and then sells them for $80. What is the percent of mark up (percent of change)?

• 60% increase

• 60% decrease

• 38% increase

• 38% decrease

In 1967, a Super Bowl commercial cost $40,000. In 2000, a commercial cost $1,800,000. What was the percent of change in the cost of a commercial?

• 4400% increase

• 4400% decrease

• 9700% increase

• 9700% decrease

The volume went from 15.6 liters to 11.4 liters.

• 27% decrease

• 27% increase

• 37% increase

• 37% decrease

The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the percent error?

• 21%

• 17.37%

• 17.4%

• 21.02%

Zed went to the store and bought a bag of chips.  He estimated there would be 350 chips in the package, but realized there were only 210 chips in that package.  What was his percent error?

• 35%

• 67%

• 85%

• 92%

Jessie estimates the weight of her cat to be 8 pounds.  The actual weight of the cat was 10 pounds.  Find the percent error.  

• 15%

• 20%

• 25%

• 30%

Bob estimates that there will be 230 people who attend the concert.  There was an actual total of 300 people who attended.  Find the percent error.  

• 23%

• 33%

• 27%

• 37%

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