How many times has the United States been to the moon?

It depends on what you mean "been" to the moon. Man and unmaned? Explorer probes?

You can get an idea by counting the junk left behind.

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

I need to know how many manned flights to the moon has the United States completed.

Thanks

To find out how many manned flights to the moon the United States has completed, you can refer to historical records and NASA's Apollo missions. The Apollo program was responsible for sending American astronauts to the moon.

Here are the manned flights to the moon as part of the Apollo program:

1. Apollo 8: This mission was launched on December 21, 1968, and it orbited the moon without landing.
2. Apollo 10: Launched on May 18, 1969, this mission was a "dress rehearsal" for the lunar landing. The spacecraft descended to within a few miles of the moon's surface but did not land.
3. Apollo 11: Perhaps the most well-known mission, Apollo 11 was the first manned mission to successfully land on the moon on July 20, 1969. Astronauts Neil Armstrong and Buzz Aldrin famously took the first steps on the lunar surface.
4. Apollo 12: Launched on November 14, 1969, this mission successfully landed on the moon, with astronauts Alan Bean and Pete Conrad conducting scientific experiments and exploring the lunar surface.
5. Apollo 13: While intended for a lunar landing, this mission encountered a technical issue en route to the moon and had to abort its landing. The crew returned safely to Earth.
6. Apollo 14: Launched on January 31, 1971, this mission successfully landed on the moon. Astronauts Alan Shepard and Edgar Mitchell conducted experiments and collected samples during their time on the lunar surface.
7. Apollo 15: Launched on July 26, 1971, this mission featured a moon landing along with the first use of the lunar rover. Astronauts David Scott and James Irwin spent over three days exploring the moon's surface.
8. Apollo 16: Launched on April 16, 1972, this mission included a successful moon landing. Astronauts John Young and Charles Duke conducted experiments and collected samples during their time on the lunar surface.
9. Apollo 17: The final mission of the Apollo program, it was launched on December 7, 1972. Astronauts Eugene Cernan and Harrison Schmitt spent three days on the moon conducting experiments and exploring the surface.

In total, the United States completed six manned lunar landings as part of the Apollo program (Apollo 11 to Apollo 17).