Learn on PengiReveal Math, Course 1Module 2: Fractions, Decimals, and Percents

2-3 Relate Fractions, Decimals, and Percents

In this Grade 6 lesson from Reveal Math, Course 1 (Module 2), students learn to convert between fractions, decimals, and percents using place-value reasoning and the definition of percent as a ratio comparing a number to 100. Students practice writing percents like 35% and 95% as equivalent fractions and decimals, and converting fractions like 3/20 and 6/8 into percent and decimal form by finding equivalent ratios with a denominator of 100. The lesson also covers simplifying fractions first when no whole-number multiplier directly yields a denominator of 100.

Section 1

Convert a percent to a fraction

Property

To convert a percent to a fraction:

Step 1. Write the percent as a ratio with the denominator 100.

Step 2. Simplify the fraction if possible.

Section 2

Convert Percents to Decimals

Property

Recall that percent means 'per hundred' or 'hundredths.' A percent may be written as a decimal using the same digits but with the decimal point shifted two places to the left.

Examples

  • 45%=0.4545\% = 0.45
  • 150%=1.5150\% = 1.5
  • 8.5%=0.0858.5\% = 0.085

Explanation

Converting percents to decimals is like a magic trick! Since 'percent' means 'out of 100,' you just take the number and move the decimal point two places to the left. If there is no decimal point, imagine it is hiding at the very end of the number before you move it. Poof! Your percent is now a decimal.

Section 3

Convert Fractions to Percents

Property

To convert a fraction to a percent, you can create an equivalent fraction with a denominator of 100. The numerator of the new fraction is the percent value.

partwhole=x100=x%\frac{\text{part}}{\text{whole}} = \frac{x}{100} = x\%

Book overview

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Continue this chapter

Module 2: Fractions, Decimals, and Percents

  1. Lesson 1

    2-1 Understand Percents

  2. Lesson 2

    2-2 Percents Greater Than 100% and Less Than 1%

  3. Lesson 3Current

    2-3 Relate Fractions, Decimals, and Percents

  4. Lesson 4

    2-4 Find the Percent of a Number

  5. Lesson 5

    2-5 Estimate the Percent of a Number

  6. Lesson 6

    2-6 Find the Whole

Lesson overview

Expand to review the lesson summary and core properties.

Expand

Section 1

Convert a percent to a fraction

Property

To convert a percent to a fraction:

Step 1. Write the percent as a ratio with the denominator 100.

Step 2. Simplify the fraction if possible.

Section 2

Convert Percents to Decimals

Property

Recall that percent means 'per hundred' or 'hundredths.' A percent may be written as a decimal using the same digits but with the decimal point shifted two places to the left.

Examples

  • 45%=0.4545\% = 0.45
  • 150%=1.5150\% = 1.5
  • 8.5%=0.0858.5\% = 0.085

Explanation

Converting percents to decimals is like a magic trick! Since 'percent' means 'out of 100,' you just take the number and move the decimal point two places to the left. If there is no decimal point, imagine it is hiding at the very end of the number before you move it. Poof! Your percent is now a decimal.

Section 3

Convert Fractions to Percents

Property

To convert a fraction to a percent, you can create an equivalent fraction with a denominator of 100. The numerator of the new fraction is the percent value.

partwhole=x100=x%\frac{\text{part}}{\text{whole}} = \frac{x}{100} = x\%

Book overview

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

Continue this chapter

Module 2: Fractions, Decimals, and Percents

  1. Lesson 1

    2-1 Understand Percents

  2. Lesson 2

    2-2 Percents Greater Than 100% and Less Than 1%

  3. Lesson 3Current

    2-3 Relate Fractions, Decimals, and Percents

  4. Lesson 4

    2-4 Find the Percent of a Number

  5. Lesson 5

    2-5 Estimate the Percent of a Number

  6. Lesson 6

    2-6 Find the Whole