What is a good way for a ten year old to earn money?
When I was 9 I learned html and started coding primitive websites, its a decent business if you can get into it, but you'll have to look for customers willing to communicate. Then again you could always find fun games to set up servers onto.
Doing the dishes!
handing out newspapers or helping out neighbors. you are still too young to apply for part-time, sorry about that!
Ask your neighbors ( with mom or dads permission) if you can pull their weeds.
play a role in a movie as a actor or do housework for your mama and neighbors.