# section 1.4 identity and equality properties (algebra)

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- 1. Section 1.4Identity and Equality Properties

2. WITHOUT using any calculator or pencil/pen, evaluate the following expressions:

901 + 00 + 357

439 + 04358 + 0

Subconsciously, you have applied the Additive Identity.

The sum of any number and 0 is equal to the number.

Thus, 0 is called the additive identity.

3. By understanding Additive Identity. What do you think is the Multiplicative Identity? Why?

1 is the multiplicative identity, since the product of any number and 1 is equal to the number itself.

4. Complete the following sentence:

The product of any number and zero is equal to______.

This is known as the Multiplicative Property of Zero

i.e.

8*015x0a(0)(-7)(0)

5. Two numbers whose produce is 1 is known as ________.

Reciprocals or Multiplicative inverses.

An example of reciprocals would be:

2 / 7 and ____ and _____ and _____

5 and ____8 and _____n and _____

6. Identity and Equality Properties

Identity Properties

- Additive Identity Property

7. Multiplicative Identity Property 8. Multiplicative Identity Property of Zero 9. Multiplicative Inverse Property

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