Math Curriculum
Level D
Unit: Number Systems
Key Lesson 7.5.6 Subtracting Rational Numbers
Lesson topic: Subtract signed numbers
Instructor Materials
- Teacher guide
- Slides
- Practice Problems resource
- CCRS standard: 7.NS.1, 7.NS.1c
- Learning goal: Compare and contrast (orally) subtraction expressions that have the same numbers in the opposite order. Recognize that the “difference” of two numbers can be positive or negative, depending on the order they are listed, while the “distance” between two numbers is always positive. Subtract signed numbers, and explain (orally) the reasoning.
- 7.5 Assessment and Practice Problems
Student Materials
Related Lessons
Preparation
If students need additional lessons before this key lesson, use these supplemental lessons.
Review and Extend
Use these supplemental lessons if needed after teaching this key lesson.
Used with permission:
1. IM K-5 Math was originally developed by Open Up Resources (OUR) and authored by Illustrative Mathematics® (IM), and is copyrighted 2017-2019 by Open Up Resources. It is licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0). OUR's K-5 Math Curriculum is available at https://openupresources.org/math-curriculum/.
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).
3. The Illustrative Mathematics® name and logo are not subject to the Creative Commons license and may not be used without the prior and express written consent of Illustrative Mathematics®.
4. This site includes public domain images or openly licensed images that are copyrighted by their respective owners. Openly licensed images remain under the terms of their respective licenses. See the image attribution section for more information.
Get the free download of Adobe Acrobat Reader.