# Mathcounts Warmupsmath Problem Solving

*Mathcounts is for all, so should Free Mathcounts Training.*

This is called 'complementary counting' and there are numerous problems that you can use this strategies to simplify the reasoning. Here is another harder problem from 2003 Mathcounts Chapter Sprint Round #29: Each day, two out of the three teams in a class are randomly selected to participate in a MATHCOUNTS trial competition. We believe that, in the same spirit as Khan Academy and Art of Problem Solving, Mathcounts training—in real time—should be free and accessible to all middle-school students in the U.S. At this unprecedented time of COVID-19, we are integrating the best free math materials and technologies to help young math students across America train for.