Simso Past Paper Exclusive May 2026

Siam International Math and Science Olympics (SIMSO) is a prestigious global competition designed to discover champions in the fields of logic, number theory, and scientific inquiry. Utilizing past papers is the most effective way for students to familiarize themselves with the exam's unique structure and demanding content. Exam Structure & Core Topics

Several "National Round" mock papers and solutions from 2021–2024 are available on , covering levels from Primary 1 to Secondary 3. Comprehensive Topic Range: simso past paper exclusive

Full Worked Solutions – Exclusive Section

4. Avoiding "Fake" Papers

1. A car accelerates from rest at 2 m/s² for 5s, then constant speed for 10s, then decelerates at 3 m/s² to stop. Find total distance.
2. Balance: ( \textC_3\textH_8 + \textO_2 \to \textCO_2 + \textH_2\textO )

"Most students stopped at f(x)=x. However, the official marking scheme awards 5/7 points for that. To get full points, you must prove that f is injective for all powers of 2, and you must explicitly rule out the pathological case where f(1)=0 leading to f(x)=0 for all x. Additionally, the domain Z+ excludes zero; 20% of students lost 2 points by testing n=0, which is invalid." Siam International Math and Science Olympics (SIMSO) is

1. The Papers: Full sets from at least 3 different years (e.g., SIMOC 2018, 2019, 2020).
2. The Answer Key: Step-by-step workings. If the paper only gives the final answer (e.g., "Answer: 42"), it is low value. You need the working.
3. The Topic Index: A classification of questions by topic (e.g., "Q5 is Speed, Q6 is Geometry"). This allows you to study by topic.