Chapter 3.7
Using objects to subtract up to 100
What You'll Learn
Recognize visual representations of subtraction problems up to 100
Match concrete objects in pictures to written subtraction sentences
Interpret how crossed-out or removed objects represent subtraction
Connect visual models to symbolic number sentences
What You'll Practice
1
Choosing the correct subtraction sentence from pictures showing objects
2
Counting remaining objects after subtraction is shown visually
3
Matching images with groups of items to their subtraction equations
Why This Matters
Using objects to visualize subtraction builds your number sense and helps you understand what subtraction really means. This concrete approach makes mental math easier and prepares you for solving word problems where you need to picture the situation.
This Unit Includes
Practice exercises
Skills
Subtraction
Visual Models
Number Sense
Concrete Representation
Two-Digit Numbers
