Adding Multi-Digit Whole Numbers Using Partial Sums

This video tutorial teaches how to add multi-digit whole numbers using expanded form and partial sums. It begins with an introduction to expanded form and the importance of place value. The tutorial then provides a detailed example of adding 45,238 and 35,987 using expanded form, followed by a second example using mental math to add 32,256 and 25,478. The lesson emphasizes understanding place value and using partial sums for efficient addition.

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