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P ERCENT P ROPORTIONS & E QUATIONS

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P ERCENT P ROPORTIONS … Write percent as a fraction Write “is” over “of” Create proportion Cross multiply then divide

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E XAMPLES … What is 45% of 32? 3 is 60% of what number? What percent of 12 is 96?

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P ERCENT E QUATIONS … Part = Percent Whole Write an equation as you read the statement, establishing the variable Solve by performing inverse operations

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E XAMPLES … 2.8 is 4% of what number? What is 31% of 82? 21 is what percent of 168?

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R EAL - LIFE A PPLICATIONS … In a school band of 24 students, 9 students play brass instruments. What percent of the members play brass instruments?

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R EAL - LIFE A PPLICATIONS … A school holds classes from 8:00 am to 2:00 pm. For what percent of a 24-hour day does this school hold classes?

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O N YOUR OWN … 92% of what number is 6? About 12,457,350 tons of the oranges harvested in the U.S. in one year were used to make juice. If 13,113,000 tons of oranges were harvested, what percent were used to make juice?

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