Fill in the blanks and state the property used.
`342+0="________"+342`

Answer

To solve the question, we need to fill in the blank in the equation `342 + 0 = "________" + 342` and state the property used.

### Step-by-Step Solution:

1. **Identify the equation**: We have the equation `342 + 0 = "________" + 342`.

2. **Understand the concept of additive identity**: The additive identity property states that when you add 0 to any number, the sum is that number itself. In mathematical terms, for any integer \( a \), \( a + 0 = a \).

3. **Apply the additive identity property**: According to this property, we can say that:
- \( 342 + 0 = 342 \)
- Therefore, we can fill in the blank with 0, since adding 0 to 342 will give us 342.

4. **Complete the equation**: Now we can rewrite the equation as:
- `342 + 0 = 0 + 342`

5. **Final answer**: The filled blank is 0. Thus, the complete equation is:
- `342 + 0 = 0 + 342`

6. **State the property used**: The property used here is the **Additive Identity Property**.

### Final Answer:
The filled blank is **0**. The property used is the **Additive Identity Property**.