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

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