The predecessor of the smallest 3-digit number is

Options

A. 999
B. 100
C. 101
D. 99

Answer

To find the predecessor of the smallest 3-digit number, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the smallest 3-digit number**:
The smallest 3-digit number is 100.

2. **Understand what predecessor means**:
The predecessor of a number is the number that comes just before it. Mathematically, the predecessor of a number \( n \) can be found using the formula:
\[ \text{Predecessor} = n - 1 \]

3. **Calculate the predecessor of 100**:
Using the formula, we substitute \( n \) with 100:
\[ \text{Predecessor of 100} = 100 - 1 = 99 \]

4. **State the final answer**:
Therefore, the predecessor of the smallest 3-digit number (100) is 99.

### Final Answer:
The predecessor of the smallest 3-digit number is **99**.