Increase and Decrease

Percent Increase and Decrease

EQ: How do you use percents to describe change?

Take out your notes to use on today's practice questions.

Multiple Choice

What is the correct Percent Change equation? 

Percent of change = _____

• $$\ \frac{original\ amount}{amount\ of\ change}$$  

• $$\ \frac{percent\ change}{original\ amount}$$  

• $$\ \frac{amount\ of\ change}{original\ amount}$$  

• $$\ \frac{original\ amount}{percent\ of\ change}$$  

Multiple Choice

If you have a percent increase problem, your original amount:

• Gets bigger

• Gets smaller

• Doesn't change

• Stays the same

Fill in the Blanks

The price of a pair of shoes increases from $52 to $64. What is the percent increase? Round to the nearest hundredth place.

Fill in the Blanks

What is the percent decrease from 80 to 64?

The following questions are about

Using Percent of Change to Calculate a New Amount

(use your notes!)

Multiple Choice

If there are 200 people that like tea more than coffee, but that number decreases by 60%, how many people still prefer tea to coffee?

• 80

• 60

• 120

• 140

Fill in the Blanks

If there are 48 cookies, and there is a 25% increase in amount of cookies, there are now

cookies (only state the number)

Open Ended

How well do you think you understand this material? What do you need the most practice with to be prepared for next week's test?