# The 400 Problem

Students develop the skills of problem solving and logical analysis. The conditions of when two subtraction sums are equal is examined to develop other skills like practicing arithmetic in context.

3 Views
1 Download

Resource Details

#### Start Your Free Trial

Save time and discover engaging curriculum for your classroom. Reviewed and rated by trusted, credentialed teachers.

Try It Free- Collections
- Activities & Projects
- Assessments
- Graphics & Images
- Interactives
- Lab Resources
- Learning Games
- Lesson Plans
- Presentations
- Primary Sources
- Printables & Templates
- Professional Documents
- Study Guides
- Units
- Videos
- Websites
- Worksheets
- Writing Prompts
- Apps
- AP Test Preps
- Articles
- Lesson Planet Articles
- Audios
- Courses
- eBooks
- Interactive Whiteboards
- Rubrics
- Syllabis
- All Resource Types
- Show All