Kids Riddles

Question: You have two books. One of them is upside-down and the other is rotated so the top of the book is facing you.

What is the sum of the first page in each book?

Question: What goes up and down the stairs without moving?

Question: What is the easiest way to poke a balloon without popping it?

Question: Mr. Smith has two children. If the older child is a boy, what are the odds that the other child is also a boy?

Question: I grow from trees and your home,
once I am grown I fall to my doom.

What am I?