Fill in the blanks so that the equality holds
`355xx0=________`

Answer

To solve the equation `355xx0 = ________`, we need to determine what `355xx0` represents.

1. **Understanding the expression**: The expression `355xx0` suggests that we are multiplying the number 355 by 0. The `xx` indicates that there are two digits we need to fill in, but since we are multiplying by 0, the result will be straightforward.

2. **Multiplication by Zero**: We know from multiplication rules that any number multiplied by 0 equals 0. Therefore, we can express this mathematically as:
\[ 355 \times 0 = 0 \]

3. **Filling in the blank**: Since we have established that `355xx0` equals 0, we can fill in the blank:
\[ 355xx0 = 0 \]

Thus, the completed equation is:
\[ 355 \times 0 = 0 \]

### Final Answer:
`355xx0 = 0`