Decimal Comparison: Find the Missing Symbol Between 0.30 and 0.3

To solve this problem, we'll follow these steps:

• Step 1: Compare the two numbers by aligning their decimal places.
• Step 2: Conclude the relationship after comparison.

Now, let's work through each step:
Step 1: The numbers are $0.30$ and $0.3$. To compare them, convert $0.3$ to $0.30$ by adding a trailing zero. Now, both numbers have two decimal places, and the comparison is straightforward: $0.30$ vs. $0.30$.

Step 2: With both numbers clearly written as $0.30$, it is evident that they are equal.

Therefore, the correct comparison sign to fill in the blank is $=$.