Fraction jokes

Alright, riddle me this: I am loud and obnoxious, I like music that rhymes. I'm a fraction of the population, but commit half the crimes! What am I?

3/7 of a chicken, 2/3 cat, 1/2 goat. What do you get when you cross those?

Answer: Chi-ca-go

Who invented fractions?

Henry the 1/8.