Manipulating the Tens Digit: Change 300 by Adding 6

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

• Step 1: Identify the tens digit of the original number, which is 300.
• Step 2: Recall that the original number (300) has the tens digit as 0.
• Step 3: Increase the tens digit (0) by 6, resulting in a new tens digit of 6.
• Step 4: Construct the new number using this updated tens digit.

Now, let's work through each step:
Step 1: The number 300 has the digits in the following places: hundreds (3), tens (0), and units (0).
Step 2: The tens digit is 0.
Step 3: By increasing the tens digit 0 by 6, we get 0 + 6 = 6.
Step 4: Replace the old tens digit with this new value, resulting in 360.

Therefore, the solution to the problem is $360$.