Kids Riddles

Question: If you look at my face there won't be 13 any place.

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 is the most common use of cowhides?

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

What am I?

Question: If you have a rope around a soccer ball and the moon, which rope would have to increase in length more to create a one meter gap between the rope and the soccer ball/moon?