Solving Unknowns using the Commutative Property of Addition

This video tutorial explains how to solve for unknowns using the commutative property of addition. It begins with an introduction to fact families and demonstrates how the commutative property allows numbers to be added in any order to achieve the same sum. The tutorial provides examples, including reordering numbers for easier calculation, and highlights the limitations of applying the commutative property to subtraction. Finally, it shows how to use the property to solve for unknown addends, emphasizing the importance of recognizing common addends on both sides of an equation.

Why does the commutative property not apply to subtraction? Explain with an example.

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What mistake do people commonly make when applying the commutative property?

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