Math Curriculum
Level B
Unit: Addition and Subtraction
Key Lesson 2.7.15 Decompose a Ten and a Hundred to Subtract
Lesson topic: Decomposing tens and hundreds to subtract
Instructor Materials
- Teacher Guide
- Slides
- Walk About and Subtract Cards resource
- CCRS Standard: 2.NBT.7, 2.NBT.9
- Learning goal: Subtract two three-digit numbers using place value strategies that include decomposing two units.
- 2.7 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:
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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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