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Warm up Complete the analogies: 5 is to 25 as 6 is to ___________ 7 is to 77 as 11 is to ___________ ¼ is to ½ as.25 is to ____________ 36 121.50

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The Percent Proportion Lesson 7-8

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Percent Proportion Compares part of a quantity to the whole quantity, called the base, using a percent. The percent proportion is: part base percent 100 = a b p =

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Percent Proportion What percent of $15 is $9? The percent is the unknown. The base always follows the word of. The part.

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Percent Proportion. What percent of $15 is $9? 9 15 p 100 = Cross multiply. 15p = 900 15 p = 60 So 60% of $15 is $9.

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Percent Proportion What number is 30% of 150? The percent. The base always follows the word of. The part is the unknown.

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Percent Proportion. What number is 30% of 150? a 150 30 100 = Cross multiply. 100a = 4500 100 a = 45 So 45 is 30% of 150.

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Percent Proportion 12 is 80% of what number? The part. The percent. The base is the unknown. The base always follows the word of.

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Percent Proportion. 12 is 80% of what number? 12 b 80 100 = Cross multiply. 80b = 1200 80 b = 15 So 12 is 80% of 15.

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Percent Proportion Your Turn: What number is 5% of 60? 80 is 75% of what number? 3 106.7

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Percent Proportion Working with a partner complete # 8-20 evens page 325. Homework: Lesson 7-8 # 2-20 evens Test Friday Lessons 7-6, 7-7, and 7-8

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