Chapter 3.4
Subtracting with place value models up to 100
What You'll Learn
Understand how place value models represent tens and ones in numbers up to 100
Apply regrouping strategies when subtracting requires exchanging a ten for ones
Visualize subtraction problems using concrete place value blocks
Connect visual models to written subtraction algorithms
What You'll Practice
1
Subtracting two-digit numbers using place value blocks
2
Solving problems that require regrouping with visual models
3
Interpreting block diagrams to find differences up to 100
Why This Matters
Place value models help you truly understand what happens when you subtract, not just memorize steps. This visual foundation makes mental math easier and prepares you for subtracting larger numbers and working with decimals in future grades.
This Unit Includes
Practice exercises
Skills
Place Value
Subtraction
Regrouping
Visual Models
Two-Digit Numbers
