Overview
The Australian Intermediate Mathematics Olympiad (AIMO) is an Australian Maths Trust paper for strong problem solvers in the middle years of secondary school. It is also a step on the Trust's olympiad pathway.
Who can apply
There is one paper for Years 7 to 10. It is pitched at Year 10 level, and younger students in Years 7 to 9 may sit it if they are motivated. Suitable candidates have strong problem-solving ability, have done enrichment work, or scored well in the Australian Mathematics Competition.
Exam pattern
The paper has 10 questions and lasts 4 hours. Eight questions need an integer answer and two need written solutions, which may include proofs.
Marking and results
The maximum is 35 marks. Questions 1 to 4 are worth 2 marks each, question 5 is worth 3, question 6 is worth 4, and questions 7 to 10 are worth 5 each. There are also 4 bonus marks for an investigation. Awards are High Distinction (about the top 10%), Distinction (about the next 15%) and Credit (about the next 25%), and others receive participation certificates.
Important dates
For 2026, the paper was held on Thursday 10 September 2026.
Fees
For 2026, the fee was AUD 25.90 per student.
After the exam
AIMO results can be used to identify students for the Australian Maths Trust's olympiad pathway.
Preparation tips
Practise multi-step problems with integer answers and also writing out full proofs.
Review past AIMO papers on the Trust's site.
Do I need to qualify to enter?
No. There is no qualifying test, though the Trust suggests it is best for students who do well in problem-solving contests.