Kids Riddles

Question: I'm round at the ends and high in the middle.What am I?

Question: The first is a sign of something good,
the second says whereto;
the third is vulgar and mean,
the fourth is bound by a ring;
the fifth is the noble one.
Together they all drum.

What are they?

Question: Paul is 20 years old in 1980, but only 15 years old in 1985.How is this possible?

Question: What has a foot but no leg?

Question: What was the president of the United State's name in 1980?