Adding and Subtracting Two-Digit Numbers
Learning Objective
I can add and subtract two-digit numbers by breaking them into tens and ones.
Lesson Flow
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Expanded Form Subtraction
Mathtastic Resources for Elementary Parents
Guided Notes
Key concepts students will learn:
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In expanded form subtraction, you first write each number as the sum of its tens and ones.
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When subtracting, if the digit you are subtracting is larger than the digit you are subtracting from, you need to borrow from the next place value.
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After borrowing and subtracting, you add the results from each place value to find the final answer.
Practice
3 questions • Multiple choice & Short answer
Exit Ticket
“Solve 42 - 25 using expanded form. Show all steps, including any borrowing.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
