Moving some posts from one blog to another

I have two self-hosted wordpress blogs (lets call them blog-A and blog-B).

On blog-A I have 300 posts and on blog-B I have 200. I want to move permanently 100 posts from blog-B to blog-A. What is the best way to do this? Also, I want to create 301 redirect for all the posts from blog-B to blog-A. Whats the easiest way to perform the above tasks?

Thanks