Percent Error
Percent of Change
Increase/Decrease
Original Price
Sale Price
Markup
100

You estimate that there are 55 jelly beans in a jar.  The actual amount is 95 jelly beans.   

Find the percent error. 

What is 42.1% error?

100

15 to 27

What is 80%

100

Sale Price: $40

Percent of Discount: 20%

What is $50?

100

Original Price: $80

Percent of Discount: 20%

What is $64?

100

Cost to store: $70

Markup: 25% 

What is $87.50?

200

You estimate 150 students in the gym. There are actually 135. Find the Percent Error. 

What is 11.1% error?

200
135 pounds to 115 pounds 

What is 14.8% decrease?

200

Sale Price: $57

Percent of Discount: 5%

What is $60?

200

Original Price: $42

Percent of Discount: 15%

What is $35.70?

200

Cost to store: $39

Markup: 75% 

What is $68.25?

300

You estimate that a baby pig weighs 20 pounds.  The actual weight of the baby pig is 16 pounds.  Find the percent error.  

What is 25% error?

300

70 students in the 8th grade to 95 students in the 8th grade 

What is 35.7% increase?

300

Sale Price of a Bike: $285

Percent of Discount: 35% 

What is $384.75?

300

Original Price of a TV: $550 

Percent of Discount: 25% 

What is $412.50?

300

A hat is originally $38.  There is a 55% markup.  What is the selling price of the hat?

What is $58.90?

400

A coach estimates that he will win the game by 40 points but he actually only wins by 20. Find the Percent Error. 

What is 100% error?

400

Original amount of a book is $16

New amount of the book is $28

What is 75% increase?

400

Sale Price: $72

Percent of Discount: 64%

What is $200?

400

The original price of a gold bracelet is $325. 

The percent of discount is 20%

What is $260?

400

The same item is sold at two stores.  Which store should you buy it from?

A: $90 cost to store with a 20% markup

B: $75 cost to store with a 45% markup

What is Store A?