Compare Measurements: 300 Centimeters vs 3 Meters

To solve this problem, let's follow our planned steps:

• Step 1: Convert the measurement of 3 meters into centimeters.
• Step 2: Compare the two measurements.

Now, we'll go through each step in detail:

Step 1: Convert 3 meters to centimeters. Using the conversion factor: 1 meter $= 100$ centimeters.

Thus, $3$ meters $= 3 \times 100$ centimeters $= 300$ centimeters.

Step 2: Compare the values: 300 centimeters (initial given) and 300 centimeters (converted from 3 meters).

Since both measurements are equal (300 cm), we conclude they are the same size.

Therefore, the correct comparison is $=$.