Learn on PengienVision, Mathematics, Grade 4Chapter 9: Understand Addition and Subtraction of Fractions

Lesson 6: Add and Subtract Fractions with Like Denominators

Property.

Section 1

Adding or Subtracting Fractions with Like Denominators on a Number Line

Property

To add or subtract fractions with like units on a number line, first partition the line according to the denominator.
For addition, start at the first fraction and move to the right (forward).
For subtraction, start at the first fraction and move to the left (backward).

Examples

Section 2

Solving Word Problems with Like Fractions

Property

To solve a word problem involving fractions, first identify the given fractions and determine the necessary operation.
Use keywords in the problem to decide whether to add or subtract.

Examples

Book overview

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Chapter 9: Understand Addition and Subtraction of Fractions

  1. Lesson 1

    Lesson 1: Model Addition of Fractions

  2. Lesson 2

    Lesson 2: Decompose Fractions

  3. Lesson 3

    Lesson 3: Add Fractions with Like Denominators

  4. Lesson 4

    Lesson 4: Model Subtraction of Fractions

  5. Lesson 5

    Lesson 5: Subtract Fractions with Like Denominators

  6. Lesson 6Current

    Lesson 6: Add and Subtract Fractions with Like Denominators

  7. Lesson 7

    Lesson 7: Model Addition and Subtraction of Mixed Numbers

  8. Lesson 8

    Lesson 8: Add Mixed Numbers

  9. Lesson 9

    Lesson 9: Subtract Mixed Numbers

Lesson overview

Expand to review the lesson summary and core properties.

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Section 1

Adding or Subtracting Fractions with Like Denominators on a Number Line

Property

To add or subtract fractions with like units on a number line, first partition the line according to the denominator.
For addition, start at the first fraction and move to the right (forward).
For subtraction, start at the first fraction and move to the left (backward).

Examples

Section 2

Solving Word Problems with Like Fractions

Property

To solve a word problem involving fractions, first identify the given fractions and determine the necessary operation.
Use keywords in the problem to decide whether to add or subtract.

Examples

Book overview

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

Continue this chapter

Chapter 9: Understand Addition and Subtraction of Fractions

  1. Lesson 1

    Lesson 1: Model Addition of Fractions

  2. Lesson 2

    Lesson 2: Decompose Fractions

  3. Lesson 3

    Lesson 3: Add Fractions with Like Denominators

  4. Lesson 4

    Lesson 4: Model Subtraction of Fractions

  5. Lesson 5

    Lesson 5: Subtract Fractions with Like Denominators

  6. Lesson 6Current

    Lesson 6: Add and Subtract Fractions with Like Denominators

  7. Lesson 7

    Lesson 7: Model Addition and Subtraction of Mixed Numbers

  8. Lesson 8

    Lesson 8: Add Mixed Numbers

  9. Lesson 9

    Lesson 9: Subtract Mixed Numbers