Math Curriculum
Level C
Unit: Fractions (Equivalency, Addition, and Subtraction)
Key Lesson 4.3.12 Sums and Differences of Fractions
Lesson topic: Adding and subtracting with like denominators
Instructor Materials
- Teacher guide
- Slides
- CCRS standard: 4.NF.3c
- Learning goal: Add and subtract fractions (including mixed numbers) with the same denominator. Analyze strategies for reasoning about sums and differences of fractions with the same denominator.
- 4.3 Assessment and Practice Problems
Student Materials
Related Lessons
Preparation
If students need additional lessons before this key lesson, use these supplemental lessons.
- 4.3.7 Fractions as Sums
- 4.3.8 Addition of Fractions
- 4.3.9 Differences of Fractions
- 4.3.10 The Numbers in Subtraction
- 4.3.11 Subtract Fractions Flexibly
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2. Adaptations and updates to IM K-5 Math are copyrighted 2019 by Illustrative Mathematics®, and are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0).
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