Decimal Point Position Analysis in Vertical Subtraction

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

• Ensure the decimal numbers are aligned correctly according to their decimal points.

• Perform the arithmetic operation to verify logical correctness.

Let's analyze the given numbers:

• The first number is $38.15$.

• The second number is $122.3$. We can express this as $122.30$ to simplify alignment.

Align the numbers vertically based on their decimal points:

$\quad 38.15$
$-122.30$

Notice the decimal points are aligned. Now, perform the subtraction:

Start from the rightmost column:

• $(5 - 0 = 5)$

• $(1 - 3 = \text{Borrow } 10, \text{ becomes } 11 - 3 = 8)$

Move to the next left column (tens column):

• $(\text{borrowed } 1 \rightarrow 8 \text{ becomes } 7)$

• $(7 - 2 = 5)$

• $(3 - 2 = 1)$

• $(\text{The result is negative because 38.15 is less than 122.30})$

Result of the subtraction is $-84.15$.

Since the exercise primarily asks if the decimal points are aligned correctly, and they indeed align correctly, we conclude:

The exercise is written correctly with respect to decimal alignment.

Therefore, the solution to the problem is True.