Warm Up Problem of the Day Lesson Presentation Lesson Quizzes

Write each fraction as a decimal. Warm Up Write each fraction as a decimal. 3 4 3 8 1. 0.75 2. 0.375 3 5 6 15 3. 0.6 4. 0.4

Problem of the Day Alex noted that 4 tulip bulbs bloomed out of every 5 bulbs that he planted. Write the part that bloomed of the total amount of bulbs planted as a fraction and a decimal. , 0.8 4 5

Learn to model percents and to write percents as equivalent fractions and decimals.

Vocabulary percent

A percent is a ratio of a number to 100 A percent is a ratio of a number to 100. The symbol % is used to indicate that a number is a percent. = 6% 6 100 Reading Math The word percent means “per hundred.” So 6% means “6 out of 100.”

Additional Example 1: Modeling Percents Write the percent modeled by each grid. A. B. shaded total _______ 32 100 ___ shaded total _______ 66 100 ___ = 32% = 66%

Check It Out: Example 1 Write the percent modeled by each grid. A. B. shaded total _______ 44 100 ___ shaded total _______ 75 100 ___ = 44% = 75%

Additional Example 2: Writing Percents as Fractions Write 28% as a fraction in simplest form. 28% = 28 100 Write the percent as a fraction with a denominator of 100. 7 25 = Simplify. 7 25 So 28% can be written as .

Check It Out: Example 2 Write 90% as a fraction in simplest form. 90% = 90 100 Write the percent as a fraction with a denominator of 100. 9 10 = Simplify. 9 10 So 90% can be written as .

Additional Example 3: Writing Percents as Decimals Write 17% as a decimal. Method 1 Use pencil and paper. 17 100 Write the percent as a fraction with a denominator of 100. 17% = = 0.17 Divide 17 by 100.

Additional Example 3 Continued Write 17% as a decimal. Method 2 Use mental math. Move the decimal point two places to the left. 17% = 0.17

Check It Out: Example 3 Write 24% as a decimal. Method 1 Use pencil and paper. 24 100 Write the percent as a fraction with a denominator of 100. 24% = = 0.24 Divide 24 by 100.

Check It Out: Example 3 Continued Write 24% as a decimal. Method 2 Use mental math. Move the decimal point two places to the left. 24% = 0.24

Lesson Quizzes Standard Lesson Quiz Lesson Quiz for Student Response Systems

Lesson Quiz 1. Write the percent modeled by the grid. 36% 2325 2. Write 92% as a fraction in simplest form. 3. Write 16.4% as a decimal. 0.164

Lesson Quiz for Student Response Systems 1. Identify the percent modeled by the grid. A. 30% B. 40% C. 50% D. 60%

Lesson Quiz for Student Response Systems 2. Which of the following represents 84% as a fraction in simplest form? A. C. B. D. 22 25 21 25 43 50 41 50

Lesson Quiz for Student Response Systems 3. Which of the following represents 15.7% as a decimal? A. 15.7 B. 1.57 C. 0.157 D. 0.0157