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Lesson Menu Five-Minute Check (over Lesson 5–2) Main Idea and Vocabulary Example 1:Find the Percent Example 2:Find the Part Example 3:Find the Whole Concept Summary: Types of Percent Problems Example 4:Percents Greater than 100 Example 5:Real-World Example

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Main Idea/Vocabulary percent proportion Solve problems using the percent proportion.

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Example 1 Find the Percent 34 is what percent of 136? Since 34 is being compared to 136, 34 is the part and 136 is the whole. You need to find the percent. Let n represent the percent. part whole Write the percent proportion. Find the cross products. Multiply.

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Example 1 Find the Percent Divide each side by 136. Answer: 34 is 25% of 136. Simplify.

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1.A 2.B 3.C 4.D Example 1 A.20% B.30% C.35% D.40% 63 is what percent of 210?

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Example 2 Find the Part What number is 70% of 600? The percent is 70, and the whole is 600. You need to find the part. Let n represent the part. part whole Write the percent proportion. Find the cross products. Multiply. Divide each side by 100.

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Example 2 Find the Part Simplify. Answer: 420 is 70% of 600.

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1.A 2.B 3.C 4.D Example 2 A.80 B.120 C.135 D.160 What number is 40% of 400?

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Example 3 Find the Whole 18.2 is 28% of what number? The percent is 28, and the part is 18.2. You need to find the whole. Let n represent the whole. part whole Write the percent proportion. Find the cross products. Multiply. Divide each side by 28.

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Example 3 Find the Whole Simplify. Answer: 18.2 is 28% of 65.

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1.A 2.B 3.C 4.D Example 3 A.27 B.35 C.37 D.40 14.7 is 42% of what number?

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CS

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Example 4 12 is what percent of 8? 12 is being compared to 8, so 8 is the whole and 12 is the part. You need to find the percent. Let n represent the percent. Percents Greater than 100 Find the cross products. Multiply. part whole Write the percent proportion.

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Example 4 150 = nSimplify. Answer: 12 is 150% of 8. Percents Greater than 100 Divide each side by 8.

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1.A 2.B 3.C 4.D Example 4 A.125% B.150% C.175% D.200% 15 is what percent of 12?

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Example 5 BASEBALL From 1999 to 2001, Derek Jeter had 11 hits with the bases loaded. This was about 30% of his at-bats with the bases loaded. How many times was he at bat with the bases loaded? The percent is 30, and the part is 11 hits. You need to find the whole number of hits.

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Example 5 Words11 hits is 30% of what number of at-bats? VariableLet n represent the whole. Equation

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Example 5 Write the percent proportion. Find the cross products. Multiply. Divide each side by 30. Simplify. Answer: He had about 37 at-bats with the bases loaded.

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1.A 2.B 3.C 4.D Example 5 A.about 522 times B.about 588 times C.about 606 times D.about 621 times BASEBALL In 2005, Alex Rodriguez had 194 hits. This was about 32% of his at-bats. How many times was he at bat?

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1.A 2.B 3.C 4.D Five Minute Check 1 A.23 B.2.3 C.0.23 D.0.023 Write 23% as a decimal. (over Lesson 5-2)

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1.A 2.B 3.C 4.D Five Minute Check 2 A.0.106 B.1.06 C.1.6 D.10.6 Write 106% as a decimal. (over Lesson 5-2)

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1.A 2.B 3.C 4.D Five Minute Check 3 A.62% B.6.2% C.0.62% D.0.062% Write the decimal 0.0062 as a percent. (over Lesson 5-2)

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1.A 2.B 3.C 4.D Five Minute Check 4 A.173.4% B.57.5% C.17.4% D.5.75% (over Lesson 5-2)

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1.A 2.B 3.C 4.D Five Minute Check 5 (over Lesson 5-2) A.2.25% B.4.44% C.22.5% D.44.4%

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1.A 2.B 3.C 4.D Five Minute Check 6 Choose the fraction that is less than 23%. (over Lesson 5-2) A. B. C. D.

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