Hosted by the Canadian Mathematical Society - one of the world's leading authorities in math

Canada's premier national mathematics competition

The first round of selection for the IMO in Canada

Top Chinese candidates will be invited to write the Canadian Math Olympiad (CMO)

Beneficial for applying to universities to study science

Date: 31st October, 2020, Saturday, 10:00am-12:30pm (2hrs 30mins)


The Canadian Open Mathematics Challenge (COMC) is Canada's premier national mathematics competition that is open to any student with an interest in and grasp of high school math. The purpose of the COMC is to encourage students to explore, discover, and learn more about mathematics and problem solving. COMC is hosted by CMS in Canada.
The Canadian Mathematical Society (CMS) was originally conceived in June 1945 as the Canadian Mathematical Congress. The goal of CMS is to promote and advance the discovery, learning and application of mathematics.

CMS Committee and ASDAN China (ASDAN Academy) have formed a partnership to bring the COMC to China from 2018, and over 1000 students from more than 110 international and key middle schools have participated in this competition.

Official Website:

Competition Rules




31st October, 2020, Saturday 10:00am-12:30pm (2hrs 30mins)


Individual written test


Consists of three sections:

  • Four introductory questions worth 4 marks each.
  • Four more challenging questions worth 6 marks each.
  • Four long-form proof problems worth 10 marks each.

There are 80 marks overall.

Exam locations

• Online (exam computer or phone must be equipped with a camera)
• Exam Centers across China


High school students


Global Awards

  • Gold
  • Silver
  • Bronze
  • Honourable Mention
    Score boundaries will be offered based on the performance of Canadian candidates.

National Awards

  • Gold: Top 10%
  • Silver: Top 25%
  • Bronze: Top 35%
  • Regional Honourable Mention: Regional top 20%
    (Students got the scores over requirement will be invited to write the Canadian Mathematical Olympiad (CMO))



Includes the exam, grading, proctor fee, past-papers, and one online mock exam (ASDAN doesn't provide any trainings)

Registration deadline

18th October, 2020 (Exam center)
25th October, 2020 (Online)

Exam Centers

Sample Problems


1、Can the students bring a calculator to COMC?
Calculators can not be used on any round for COMC.
2、Refund policy

If, for some reason, the student is unable to attend after paying the fee, please contact us. If you apply before the registration deadline, 25% of the registration fee will be deducted as academic materials and service fees. If you apply after the registration deadline, no refund will be given.

Northern Contact
Northern Region:
Beijing、Tianjin、Heilongjiang、Jilin、Liaoning、 Heibei、Inner Mongolia、Shanxi、Shandong
Eastern China Contact
Eastern Region:
Southern China Contact
Southern Region:
Western China Contact
Western Region:
Central China Contact
Central Region:
Central China Contact
Central Region: