I'd really appreciate it if any of you could help me with this:

When you express a number below 1, does a unit for the number take a singular form, or plural?

For example, I know 17.5 is plural and therefore you use "centimeter

**s.**" But what if you use "meter" as a unit? Which do you use, 0.175

*meter*or 0.175

**s***meter*?

1) 0.01

*kilogram*or 0.01

*kilogram*?

**s**2) 1.1

*inch*or 1.1

*inche*?

**s**3) -0.1

*degree*or -0.1

*degree*?

**s**I'm confused, but I believe there's a strict rule for this.

Thank you.