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Holt Mathematics Course 2 Chapter 1 Lesson 8

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We've learned about order of operations and combining like terms. Let's layer the distributive property on top of this.

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Sal shows how any number plus 0 is the original number.

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The identity property of 1 says that any number multiplied by 1 keeps its identity. In other words, any number multiplied by 1 stays the same. The reason the number stays the same is because multiplying by 1 means we have 1 copy of the number. For example, 32x1=32.

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What are the Identity Properties of Addition and Multiplication? | Virtual Nerd

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