**Warmup**

**Activity #1**

** Show Percentages by Completing Double Number Line Diagrams.**

The gas tank in dad’s car holds 12 gallons. The gas tank in mom’s truck holds 50% more than that.

- Complete the double number line diagram below to show the percentages that correspond to the original amount and to the new amount.

At a movie theater, the size of popcorn bags decreased 20%. The old bags held 15 cups of popcorn.

- Complete the double number line diagram below to show the percentages that correspond to the original amount and to the new amount.

A school had 1,200 students last year and only 1,080 students this year.

- Complete the double number line diagram below to show the percentages that correspond to the original amount and to the new amount.

One week gas was $1.25 per gallon. The next week gas was $1.50 per gallon.

After a 25% discount, the price of a T-shirt was $12.

Compared to last year, the population of Boom Town has increased 25%.The population is now 6,600.

**Activity #2**

** Use Double Number Line to Solve Percentage Problems.**

- Read the story below and answer the questions that follow.

A juice box has 20% more juice in its new packaging. The original packaging held 12 fluid ounces.

(1.) How much juice does the new packaging hold?

Two students; Priya and Clare both attempt to solve the problem.

**Activity #3**

** Understanding Percentage Problems.**

- Compare the two statements below and express your thinking.

Noah thinks the answers to these two questions will be the same.

- This year, a herd of bison had a 10% increase in population. If there were 550 bison in the herd last year, how many are in the herd this year?
- This year, another herd of bison had a 10% decrease in population. If there are 550 bison in the herd this year, how many bison were there last year?

(1.) Do you agree with him?

(2.) Explain your reasoning.

**Challenge #1**

A bakery used 25% more butter this month than last month. If the bakery used 240 kilograms of butter last month.

**Challenge #2**

Last week, the price of oranges at the farmer’s market was $1.75 per pound. This week, the price has decreased by 20%.

**Challenge #3**

The equation * *** d **= 3 represents the relationship between the distance (

**Quiz Time**

https://www.ixl.com/math/grade-7/percent-of-change-find-the-original-amount-word-problems

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