Examples:

1)

|-3| = -(-3) = 3, since -3 < 0.

2)

|7| = 7, since 7 0.

3)

|-4.5| = 4.5, since -4.5 < 0

4)



5)

|1 - SQRT(2)| = SQRT(2) - 1, since 1 < SQRT(2) then 1 - SQRT(2) < 0.