Solve Vertical Subtraction: 15 Minus 4 Step-by-Step

To solve this problem, we'll perform simple vertical subtraction for the numbers given, 15 and 4:

Step-by-step solution:

• Step 1: Write the numbers in a column, aligning the digits according to place value.
  
• Step 2: Start subtracting from the rightmost column (the ones column).
  In the ones column, subtract 4 from 5:$5 - 4 = 1$.
• Step 3: Move to the tens column. There is no subtraction to perform here since it's only $1 - 0$, which leaves the digit as is.

Thus, there is no borrowing needed because the digits in the minuend are sufficient to carry out the subtraction.

The result of the subtraction $15 - 4$ is $11$.

Therefore, the solution to the problem is $11$.

The correct multiple-choice answer is option 1: $11$.