Guys, would it seem slutty if a random girl gave you her number?

Not a turn off for me, it shows that the girl can get what she wants, even if its the last day of class.

If you like the guy, do it. You have much more to gain than to lose. I'd find it a turn-off, but I'm probably in the minority with that opinion.

give some hints to him before doing that.. like send some " I like you " signals

Not at all. In fact many guys, myself included, think it's a major turn on if a girl gives a guy her number. Gotta love that confidence. Summary: not slutty, sexy!

Personally, I'd strike up a conversation instead of just handing him your number. Ask him what he's doing over break or whatever, and drop some hints. If he doesn't take the hint, just tell him he should call you and give your number.

I don't think just giving the number would be bad, but I think a little context might get him more excited about calling.