Compare Decimals: Find the Symbol Between 3.33 and 3.330

To solve this problem, we will compare the decimal numbers $3.33$ and $3.330$.

First, let's express each number to have the same number of decimal places. The number $3.33$ can be written as $3.330$ since adding a zero at the end of the decimal portion does not change its value.

Next, we compare each digit position:

• The whole number part: $3 = 3$.
• The first decimal place: $3 = 3$.
• The second decimal place: $3 = 3$.
• The third decimal place: $0 = 0$.

Since both numbers $3.33$ (expressed as $3.330$) and $3.330$ are equal at each digit position, these numbers are equal.

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

Therefore, the solution to the problem is $3.33 = 3.330$.