Place Value Problem: Find the Number 4-2-8 Using Digit Positions

To solve the problem, we'll determine the number formed by the given digits based on their respective positions in the number:

• Step 1: Identify the positions of the digits.
  - Hundreds digit is 4.
  - Tens digit is 2.
  - Units digit is 8.
• Step 2: Use the decimal structure formula to form the number.
  - Number = $100 \times 4 + 10 \times 2 + 1 \times 8$
• Step 3: Perform the multiplication and sum:
  - $100 \times 4 = 400$
  - $10 \times 2 = 20$
  - $1 \times 8 = 8$
• Step 4: Add these values together:
  - $400 + 20 + 8 = 428$

Therefore, the number we are looking for is $428$.