Learn on PengiBig Ideas Math, Advanced 1Chapter 5: Ratios and Rates

Lesson 5: Percents

In this Grade 6 lesson from Big Ideas Math Advanced 1, students learn what a percent is and how it connects to ratios and fractions, practicing how to convert percents to fractions with a denominator of 100 and how to write fractions as equivalent percents. The lesson covers writing percents such as 35% or 174% as simplified fractions or mixed numbers, and converting fractions like 3/50 to percents by finding equivalent fractions with a denominator of 100. It aligns with Common Core standard 6.RP.3c and includes real-world applications of part-to-whole reasoning.

Section 1

Understanding Percent

Property

The word percent comes from the Latin phrase, per centium, literally "of one hundred." Percents are a special type of fraction with a denominator of 100. Percents represent fractions and means, "per hundred." The symbol "%" is used to represent percent. For example, 25% means 25 per hundred, or 25100\frac{25}{100}.

Examples

Section 2

Converting Between Percents and Fractions

Property

To convert a percent to a fraction, use the definition: 25%=2510025\% = \frac{25}{100}, then simplify if possible. To convert a fraction to a percent, create an equivalent fraction with a denominator of 100, like 25=2×205×20=40100=40%\frac{2}{5} = \frac{2 \times 20}{5 \times 20} = \frac{40}{100} = 40\%.

Examples

Book overview

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Chapter 5: Ratios and Rates

  1. Lesson 1

    Lesson 1: Ratios

  2. Lesson 2

    Lesson 2: Ratio Tables

  3. Lesson 3

    Lesson 3: Rates

  4. Lesson 4

    Lesson 4: Comparing and Graphing Ratios

  5. Lesson 5Current

    Lesson 5: Percents

  6. Lesson 6

    Lesson 6: Solving Percent Problems

  7. Lesson 7

    Lesson 7: Converting Measures

Lesson overview

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Section 1

Understanding Percent

Property

The word percent comes from the Latin phrase, per centium, literally "of one hundred." Percents are a special type of fraction with a denominator of 100. Percents represent fractions and means, "per hundred." The symbol "%" is used to represent percent. For example, 25% means 25 per hundred, or 25100\frac{25}{100}.

Examples

Section 2

Converting Between Percents and Fractions

Property

To convert a percent to a fraction, use the definition: 25%=2510025\% = \frac{25}{100}, then simplify if possible. To convert a fraction to a percent, create an equivalent fraction with a denominator of 100, like 25=2×205×20=40100=40%\frac{2}{5} = \frac{2 \times 20}{5 \times 20} = \frac{40}{100} = 40\%.

Examples

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 5: Ratios and Rates

  1. Lesson 1

    Lesson 1: Ratios

  2. Lesson 2

    Lesson 2: Ratio Tables

  3. Lesson 3

    Lesson 3: Rates

  4. Lesson 4

    Lesson 4: Comparing and Graphing Ratios

  5. Lesson 5Current

    Lesson 5: Percents

  6. Lesson 6

    Lesson 6: Solving Percent Problems

  7. Lesson 7

    Lesson 7: Converting Measures