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Add & Subtract Fractions (Grade 4)

Related Topics:
Lesson Plans and Worksheets for Grade 4
Lesson Plans and Worksheets for all Grades
More Lessons for Grade 4
Common Core For Grade 4
Add and subtract mixed numbers with like denominators
Solve word problems involving addition and subtraction of fractions



 
Videos, examples, solutions, and lessons to help Grade 4 students learn to understand a fraction a/b witha > 1 as a sum of fractions 1/b.

A. Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.

B. Decompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation. Justify decompositions, e.g., by using a visual fraction model. Examples: 3/8 = 1/8 + 1/8 + 1/8 ; 3/8 = 1/8 + 2/8 ; 2 1/8 = 1 + 1 + 1/8 = 8/8 + 8/8 + 1/8.

C. Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.

D. Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.

Common Core: 4.NF.3

Suggested Learning Targets

  • I can use models to add and subtract fractions.
  • I can use visual models to decompose a fraction. For example, 7/12 = 4/12 + 1/12 + 1/12 + 1/12.
  • I can add or subtract mixed numbers.
  • I can solve word problems with fractions.
Decomposing Fractions and Mixed Numbers: 4.NF.3
How to decompose fractions and mixed numbers into sums of smaller fractions and whole numbers?



Mixed Numbers and Improper Fractions 4.NF.3
How to turn Mixed Numbers into Improper Fractions and Fractions into Mixed Numbers using visual models? Decomposing fractions. 4.NF.3.c / 5.NF.1 - Subtraction Using the "Counting Up" Strategy
How to use the strategy of "counting up" to solve subtraction problems involving renaming or regrouping? The first part of this video addresses the Common Core math standard of 4.NF.3.c and the later part addresses 5.NF.2. 4 NF B 3 A
When addind fractions, you are joining together same size parts.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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