Decimal Point Position Analysis in Vertical Subtraction

Determine whether the exercise is correctly written or not.
The position of the decimal point corresponds.

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.