I'm going to get some pizza just you wait and see!
GIVE ME HALF!!
I have one whole pizza and its all for me!
You'd better give me more than that. Why can't you be more nice.
I know you want some pizza but you only get one slice ,sis.
You have to share the pizza. It must be split in two. The pieces should be cut the same for each of you. 1 half pizza and 1 half pizza make 1 whole pizza.
You'd better give me half that stack or else i'll  start a fight!
I have a stack of cookies and you get just one bite.
We're going to be in a big trouble. We've made a big mess!  But I have made no more than you and you have made no less. 
we'd better each clean half. There's so much work to do. We'll be done in half the time.