The 2018 Raytheon MATHCOUNTS National Competition was held May 1214, 2018 Washington, DC.

The Countdown Round features the 12 students who scored highest during the written portion of the competition. Problem are read aloud for the audience, but each competitor also has the problem displayed on a monitor in front of them. Students are allowed to buzz in at any point, they do not need to wait for the full question to be read.

Find out more about the MATHCOUNTS Competition Series at http://www.mathcounts.org/competition.