Number Identification: Which Expression Equals 63,115?

To solve this problem, we'll break down the number 63,115 based on its decimal structure:

• Identify the place values and their contributions:
  • The digit 6 is in the ten-thousand place, representing $6 \times 10,000$.
  • The digit 3 is in the thousand place, representing $3 \times 1,000$.
  • The digit 2 is in the hundred place, representing $2 \times 100$.
  • The digit 1 is in the ten place, representing $1 \times 10$.
  • The digit 5 is in the unit place, representing $5 \times 1$.
• After expressing each digit's contribution, combine them to verify the complete expression:

  $63,115 = 6 \times 10,000 + 3 \times 1,000 + 2 \times 100 + 1 \times 10 + 5 \times 1$.

Comparing these with the answer choices, we find that the correct expression is:

$63,115 = 6 \times 10,000 + 3 \times 1,000 + 2 \times 100 + 2 \times 10 + 5 \times 1$

Therefore, the correct choice is choice 4. Hence, the solution to the problem is $63,115 = 6 \times 10,000 + 3 \times 1,000 + 2 \times 100 + 2 \times 10 + 5 \times 1$.