Adding and Subtracting Two-Digit Numbers

4th GradeMath25 min

Learning Objective

I can add and subtract two-digit numbers by breaking them into tens and ones.

Lesson Flow

Watch Video

2 min

Expanded Form Subtraction

Mathtastic Resources for Elementary Parents

Guided Notes

5 min

Key concepts students will learn:

  • In expanded form subtraction, you first write each number as the sum of its tens and ones.

  • 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.

  • After borrowing and subtracting, you add the results from each place value to find the final answer.

Practice

10 min

3 questions • Multiple choice & Short answer

Exit Ticket

5 min

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