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Chapter 2.7
Using models to add up to 100
What You'll Learn
Identify tens and ones values in two-digit numbers using visual block models
Recognize how base-ten blocks represent quantities up to 100
Add two numbers by combining their tens and ones separately
Use place value understanding to build addition fluency with larger numbers
What You'll Practice
1
Counting tens and ones from base-ten block diagrams
2
Adding two-digit numbers using visual block models
3
Combining blocks to find sums up to 100
Why This Matters
Using block models helps you visualize how addition works with larger numbers. This hands-on understanding of place value builds the foundation for mental math strategies and prepares you for adding even bigger numbers without needing to count every single unit.
This Unit Includes
Practice exercises
Skills
Place Value
Addition
Base-Ten Blocks
Visual Models
Tens and Ones
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