Solve Vertical Subtraction: 105 minus 3

Let's solve the subtraction problem $105 - 3$:

Align the numbers vertically to ensure each digit is in the correct place value position:

• Write 105 as:
  $\begin{array}{c} 1 & 0 & 5 \\ \end{array}$

• Place 3 beneath 105 such that it aligns with the rightmost digit (units place):
  $\begin{array}{c} - & & 3 \\ \end{array}$

• Subtract each column starting from the rightmost side (units digit) to the left:

Step-by-step subtraction:

• Units column: $5 - 3 = 2$

• Tens column: There is nothing to subtract with 0, so it remains $0$.

• Hundreds column: Similarly, there is nothing to subtract, so it remains $1$.

Combine the results of these steps to find the answer:

The result of the subtraction $105 - 3 = 102$.

Therefore, the correct answer is $102$.