Expanding Numbers to Add or Subtract: Using Expanded Form

This lesson teaches how to add or subtract 10 or 100 to a number using expanded form. It begins with an introduction to expanded form, explaining how to break down numbers into their individual place values. The lesson provides examples of subtracting 10 from 375 and adding 100 to 631, demonstrating the process of expanding numbers and then recombining them to find the result. By the end, students will understand how to manipulate numbers using expanded form for addition and subtraction.

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