Am I supposed to get a girl's number before I ask her out?

I'm still trying out new ways to do this but my trend I've got so far is to usually ask for her number after most of the casual conversation. Two girls I've done this with told me that they thought it was surprising and very bold to do, which they thought was attractive.

have a nice conversation , suggest doing something later, then get the number as its a logical extension of doing something later.

a vague request for a number is a pussy "I don't want to expose myself to rejection" move, and that turns women off

>>18000209
Don't get me wrong I have no problem asking for her number directly, I just don't want to be weird about it and just blurt it out of the blue or in an unrelated conversation.
I don't want to be talking about almonds and then suddenly go "hey what's your number btw we can activate our almonds together" or something you know what I mean?

>>18000209
This is correct. Don't be autistic,OP.

I forgot to mention I've known this girl for maybe 3 months. So I'm not asking for some bar chick's number