This should be extremely easy, but it confuses me right now.

Answer:
-1, |3/2|, |-2|, |-3|, 3.5
Step-by-step explanation:
Arranging the numbers in order from least to greatest gives -1, |3/2|, |-2|, |-3|, 3.5.
Note that the numbers in parentheses are regarded as absolute numbers.