International teams are consisted of "alternate" members from each group. WMTC is responsible to put those members together to form "International Teams" based on factors such as communication skills. Individual groups are not allowed to form these teams by themselves. Each international team can only be formed with 2 or 3 regions. Each team will consist of six students plus one team leader (not student). A team can participate as a country, a region, or a city; individual registrations will not be accepted. WMTC is made up of three different rounds, individual, relay, and team. Electronic devices like calculators, mobile phones, or computers will not be allowed during the competition. In the individual rounds, each person gets a set of multiple choice problems and the scores of every team member will be averaged. Students will not be allowed to talk or pass papers around during the individual round. The first individual round consists of 15 questions that are two points each; these questions will have to be completed within 20 minutes. Each correct answer will give two points, the incorrect answer will give zero points, and the black answer will be 0.5 point. In the second individual round, students will be required to complete 8 questions, six medium level and two hard level, within 40 minutes. The six medium level questions will be worth four points if the answer is correct and the two hard level questions will be worth eight points if the answer is correct. The wrong or incorrect answers will only give 0 point. The maximum total score for both rounds is 70 points.

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In the relay rounds, each team divides into three groups of two (the numbers may vary if the team isn’t complete). There are a total of three rounds that are eight minutes each. Though both students in the group will receive a question, only the answer from the second member of the relays group will be counted. One student in a group will be sitting behind the other student. The student in the front (the first student) will receive a question and this student will solve it and pass the answer using a paper slip to the student in the back (the second student). Only a single numeric number is allowed to write on the paper slip; writing any word or sentence regarding the question is prohibited. The second student’s question will have a unknown variable in the question and the question cannot be solved unless the first student passes an answer back. If the first student passes the wrong answer to the second student, the chances of that group getting a correct answer will decrease significantly. The second student’s answer will be collected at the end of five minutes and at the end of eight minutes. The correct answer at the end of five minutes will be worth 20 points, but it will only be worth 15 if it was turned in at the end of eight minutes. The grading scheme follows the chart below: (Correct = C; Incorrect = I; No Answer= X)