Hand 1: I would have played it the same way, but it looks like you were beat with an overpair.

Hand 2: Looks like you're beat on the flop, I'd fold to the reraise.

Hand 3: Oh, I'd don't know. Maybe call or reraise to $1 just to see if Villian was serious. If he's got anything less than an Ace, he'd likely fold to a raise or check the turn.

Just my noob opinion. Use it at your own risk.