Question: Why did Dennis run away from George and Martha's house?
Question: Why does George go to find Dennis since he hates him? Did he also expect Dennis to listen to him after he had just scolded Dennis?
Chosen answer: He doesn't hate Dennis and does not want anything to happen to him. He's just a rather crotchety old man who is annoyed by a precocious kid. He may not expect Dennis to listen to him, but he at least makes the effort to reach out as most adults would.
Answer: Because of what George said to him in the house after he was robbed. He hurt Dennis' feelings so he ran away.