What do the Stars on the U.S. Flag mean.

How many are there? When you count them, you will know what they represent.

http://en.wikipedia.org/wiki/Flag_of_the_United_States

They represent the number of states that are in the united states of america.

they represent the number of states in th U.S. there were originally 13 for the original colonies

The stars on the U.S. flag represent the 50 states of the United States of America. Each star symbolizes one state, and the arrangement and number of stars have changed over time as new states were admitted into the union. The stars are white on a blue field, which represents a "new constellation" as mentioned in the original U.S. national anthem.

To find this answer, you can simply look at the U.S. flag and count the number of stars. Alternatively, you can also research the history of the flag or consult official sources such as the legislation regarding the flag design.