Hong Kong International Mathematical Olympiad

Over 30,000 students participated in HKIMO in 2024 worldwide. Grade 2–12 Canadian Students (Academic year 2024–2025) can participate in this contest. We will not ship awards outside Canada.

Saturday, May 10, 2025 @ 9:30 AM ET and 6:30 PM ET.

Duration: 90 minutes | Format: Online Proctored | Number of Questions: 25 | Score per question: 4 | Total score: 100 | Time allowed: 1.5 hours (90 minutes)

Exam Areas:

• Logical thinking — 5 questions

• Arithmetic / Algebra — 5 questions

• Number Theory — 5 questions

• Geometry — 5 questions

• Combinatorics — 5 questions

This contest offers all medal winners the opportunity to participate in the Global Final online. Since travel costs are incredibly high, many eligible students can now participate in the final. You don't have to spend thousands of dollars to travel to Singapore for a few hours of events. Also, WIMO is offered for free if someone wins Gold in any two finals.

• Gold Award: 80th percentile and above

• Silver Award: 60th percentile and above

• Bronze Award: 40th percentile and above

• Merit Award: 20th percentile and above

• Total Award: The highest three scorers in each grade by global ranking (Champion Trophy | 1st Runner-up Trophy | 2nd Runner-up Trophy)

Certificates and medals are awarded to students with gold, silver, and bronze awards. The remaining students will receive participation certificates. The exact awarding percentage will be slightly adjusted if some students get the same marks. If multiple students achieve the same score, HKIMO will consider the winner's date of birth — the younger winner will be ranked higher.

The individual contest for CKSTEM students in the HKIMO Online Heat Round is free. CKSTEM is happy to cover the cost of students who believe in and invest in our philosophy of Learn, Compete, and Win! Please ask your instructor for the discount code.

• Individual (non-CKSTEM): 40 CAD, including shipping fees

• School registration (15+ participants): 32 CAD per student, including shipping fees

• School registration (fewer than 15 participants): 36 CAD per student, including shipping fees

We offer support for schools with underprivileged students. Please don't hesitate to let us know if your school needs help.

Individuals or CKSTEM students can enroll using the registration link at the top of this page. If you don't already have an account, please follow the account creation instructions before enrolling. Please review the cancellation and refund policy before registering. Schools can email info@ckstem.org to enroll their students.

You can review the detailed information brochure by contacting us at info@ckstem.org.

You can review the HKIMO Contest syllabus by contacting us or visiting the official HKIMO website.

You can find the sample questions on the official HKIMO website or by contacting us.

You will get access to a free practice test after you enroll in the contest.

The contest fees students pay to Competitive Kids STEM for hosting competitions are non-refundable. Our organization pays a cost to the various external organizations that own these competitions to be allowed to host them. Contests require significant time and resource investment, not to mention the various charges paid for processing these payments to external organizations, multiple third parties, and financial institutions.

As a nonprofit organization, CKSTEM operates very leanly and has limited resources to keep our operating costs low to make our offerings available at a much lower cost to the students. Hence, we cannot offer any refund for contest fees to students for withdrawals or cancellations beyond our control.

If CKSTEM has wrongly charged any student, or we cancel an event due to reasons under our control and we receive refunds from external organizations, we will happily refund the fees paid by the students. Please note that processing charges could be deducted from the refund amount.

The eligible students (Gold/Silver/Bronze Awards) from the Heat Round will be sent an email invite to register for online finals by paying an additional registration fee. Please note that all expenses and fees for the Final must be borne by students/parents, who will be notified once registration opens for eligible students. The Heat and Final are separate competitions. Students eligible for the Final who do not register for Finals will still receive their Heat awards.

The contest will take place on Aug 29, 2025 ~6 pm ET (the exact time will be published later).

Duration: 120 minutes | Number of Questions: 30 | Score per question: 5 | Total score: 150 | Time allowed: 2 hours (120 minutes)

Exam Areas:

• Logical thinking — 6 questions

• Arithmetic / Algebra — 6 questions

• Number Theory — 6 questions

• Geometry — 6 questions

• Combinatorics — 6 questions

• Gold Award: 80th percentile and above

• Silver Award: 60th percentile and above

• Bronze Award: 40th percentile and above

• Merit Award: 20th percentile and above

Certificates and medals are awarded to students with gold, silver, and bronze awards. The remaining students will receive participation certificates.

Gold Award Winners of HKIMO, TIMO, and Greater Bay Area Mathematical Olympiad Finals (who win Gold awards in at least 2 Finals) qualify for WIMO (World Mathematical Olympiad) — a free competition among the best math students worldwide. A free two-day workshop on Olympiad Training by past IMO Winners and Math coaches is also arranged. WIMO is held in different countries every year.

This round is invitational. Students from the previous round will be informed if they are eligible for the finals.

• CKSTEM students: 200 CAD

• All other students: 250 CAD, including shipping fees

CKSTEM is happy to support the students who make us proud.

All HKIMO Heat Medal Winners can participate in the HKIMO Finals. The registration link will be posted after the heat round results. We will post practice material here as well. Please contact us at info@ckstem.org to be notified when registration opens.

The contest fees students pay to Competitive Kids STEM for hosting competitions are non-refundable. Our organization pays a cost to the various external organizations that own these competitions to be allowed to host them. Contests require significant time and resource investment, not to mention the various charges paid for processing these payments to external organizations, multiple third parties, and financial institutions.

As a nonprofit organization, CKSTEM operates very leanly and has limited resources to keep our operating costs low to make our offerings available at a much lower cost to the students. Hence, we cannot offer any refund for contest fees to students for withdrawals or cancellations beyond our control.

If CKSTEM has wrongly charged any student, or we cancel an event due to reasons under our control and we receive refunds from external organizations, we will happily refund the fees paid by the students. Please note that processing charges could be deducted from the refund amount.