Absolute value. Game on.

First compute the difference: $11 - 10 = 1$. Then take the absolute value: $|1| = 1$.

Absolute value gives the non-negative distance from $0$, so $|-2| = 2$.

The absolute value of a non-negative number is itself: $|8| = 8$.

$0$ is its own distance from $0$, so $|0| = 0$.

First compute the difference: $5 - 4 = 1$. Then take the absolute value: $|1| = 1$.

Absolute value gives the non-negative distance from $0$, so $|-3| = 3$.

The absolute value of a non-negative number is itself: $|17| = 17$.

$0$ is its own distance from $0$, so $|0| = 0$.