When preparing to subtract $81 - 25$, you need to decompose a ten. How is one ten correctly decomposed?

$1 \text{ ten} = 1 \text{ one}$

$1 \text{ ten} = 100 \text{ ones}$

$1 \text{ ten} = 10 \text{ tens}$

$1 \text{ ten} = 10 \text{ ones}$

To subtract $453 - 162$, we must decompose $1$ hundred into $10$ tens. Why is this step necessary?

Because $3$ is greater than $2$ in the ones place.

Because $5$ is less than $6$ in the tens place.

Because $4$ is greater than $1$ in the hundreds place.

Because we always decompose a hundred for a 3-digit problem.