Round function returns different values for same calculated input.

(A worksheet illustrating my issue is attached.)

I've got 3 formulas that calculate to the same value (-0.05)

= 58.1 - 58.15
= 58.4 - 58.45
= 64.4 - 64.45

Why, then, does the round function return different values?

=ROUND(58-58.05,1) returns 0
=ROUND(58.4-58.45,1) returns -0.1
=ROUND(64.4-64.45,1) returns 0

Is there some logic at work here? (Maybe I'm searching the wrong keywords, but I'm stumped.) Thanks.