Splash Screen

Lesson Menu Five-Minute Check (over Chapter 6) Then/Now New Vocabulary Key Concept: Percent Example 1: Percents as Fractions Example 2: Less Than 1% or Greater Than 100% Example 3: Fractions as Percents Example 4: Real World Example: Fractions as Percents Example 5: Real-World Example: Rounding Percents

Over Chapter 6 5-Minute Check 1 Express the ratio 18 out of 24 students as a fraction in simplest form. A. B. C. D.

Over Chapter 6 5-Minute Check 2 Express the ratio 8 baskets out of 14 tries as a fraction in simplest form. A. B. C. D.

Over Chapter 6 5-Minute Check 3 A.10.5 B.13 C.18 D.21

Over Chapter 6 5-Minute Check 4 A.45 B.37 C.35 D.23

Over Chapter 6 5-Minute Check 5 A.elementary; 19.8 students/classroom B.elementary; 23.4 students/classroom C.middle; 22 students/classroom D.middle; 24 students/classroom The elementary school has 22 classrooms for 435 students. The middle school has 37 classrooms for 814 students. Which school has the least number of students per classroom?

Then/Now You have already converted fractions and decimals. (Lesson 3–1) Express percents as fractions. Express fractions as percents.

Vocabulary percent

Concept

Example 1 A Percents as Fractions A. Write 40% as a fraction in simplest form. Answer: Definition of percent Simplify

Example 1 B Percents as Fractions Answer: B. Definition of percent Simplify.

Example 1 CYP A A. Write 35% as a fraction in simplest form. A. B. C. D.

Example 1 CYP B B. Write % as a fraction in simplest form. A. B. C. D.

Example 2 A Less Than 1% or Greater Than 100% A. Write 0.3% as a fraction in simplest form. Multiply by to eliminate the decimal in the numerator. Answer:

Example 2 B Less Than 1% or Greater Than 100% B. Write 104% as a fraction in simplest form. Answer:

Example 2 CYP A A. Write 0.8% as a fraction in simplest form. A. B. C. D.

Example 2 CYP B B. Write 160% as a fraction in simplest form. A. B. C. D.

Example 3 A Fractions as Percents Answer: 95% or 95% A. Write as a percent. ___ Write an equivalent fraction with a denominator of 100. Then write the fraction as a percent.

Example 3 B Fractions as Percents Answer:160% B.

Example 3 CYP A A.68% B.4.25% C.0.68% D.85% A.

Example 3 CYP B A. B. C. D. B.

Example 4 Fractions as Percents GAMES During the soccer season, the Delta Cougars won 12 of their 16 games. Find the Cougars wins as a percent. Cross products Multiply. Divide each side by 16. Simplify.

Answer: The Cougars won 75% of their games. Example 4 Fractions as Percents

Example 4 A.75% B.80% C.85% D.90% Amy got 17 questions correct out of 20 on a test. What percent did she get right?

Example 5 Rounding Percents CLUBS After a survey, Deion discovered that 8 out of 14 eighth graders at his school participate in a club activity. Find the percent of eighth graders that participate in a club. Round to the nearest hundredth. Cross products Multiply. Estimate,

Example 5 Rounding Percents Divide each side by 14. Simplify. Answer:So, about 57.14% of eighth graders participate in a club activity. Check for Reasonableness 57.14% is close to the estimate of 50%.

Example 5 A.28.75% B.31.72% C.34.78% D.38.49% HEIGHT In Elizas math class, 8 out of 23 students are taller than Eliza. To the nearest hundredth, what percent of the students are taller than Eliza?

End of the Lesson