Answer:
Round and round I go never stopping in a continuous flow. I hang out with numbers each and every day and nothing ever gets on my way. What am I?
A father's child, a mother's child, yet no one's son
What goes up and down but never moves?
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
Defends your noggin from the hard pavement
What never gets any wetter no matter how hard it rains?