Solve: 0.3 × 10 - Decimal Multiplication with Powers of Ten

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

• Step 1: Understand the operation needed: multiply the decimal 0.3 by 10.
• Step 2: Apply the rule for multiplying by powers of 10.
• Step 3: Execute the operation and write down the result.

Now, let's work through each step:
Step 1: We need to multiply 0.3 by 10. Multiplying by 10 involves shifting the decimal point.
Step 2: Using the rule for multiplying decimals by 10, we shift the decimal point in 0.3 one place to the right.
Step 3: Originally, the decimal point in 0.3 is after the '3'. After shifting it right by one place, we get '3.0'. This is equivalent to $3$.

Therefore, the solution to the problem is $3$.