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.

 

 

 

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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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