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

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

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

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

**(3). A school had 1,200 students last year and only 1,080 students this year. **

**(4). One week gas was $1.25 per gallon. The next week gas was $1.50 per gallon. **

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

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

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

A juice box has 20% more juice in its new packaging. The original packaging held 12 fluid ounces. How much juice does the new packaging hold? Two students; Priya and Clare both attempt to solve the problem.

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** Understanding Percentage Problems.**

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?

Do you agree with him? Explain your reasoning.

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

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

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

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