Humming Bird Mathematics Olympiad (HMO) Class 6: syllabus, dates and exam pattern (2026–27)

Humming Bird publishes its Class 6 maths syllabus as a flat list of fifteen bullets, with no sections and no marks against any of them: Number Systems, Numbers and Their Operations, Factors and Multiples, Parts and Wholes, Fractions and Decimals, "Algebra, Ratio and Proportion", Algebra, Ratio and Proportion, Geometry and Mensuration, Mensuration, Geometry, Graphical Representation of Data, Data Handling, Reasoning and Aptitude, and HOTS based Questions. Five of those fifteen are umbrella headings printed at the same level as the topics they contain, which is why the list looks longer than it is — the real content is about nine topics. Three of them have no chapter in the 2026-27 Ganita Prakash, and all three moved rather than disappeared. Ratio and proportion is now Class 8 material, taught across Proportional Reasoning-1 and Proportional Reasoning-2; it is the one topic here our curator taxonomy carries as a Class 6 olympiad-scope topic beyond the book, and our Class 6 maths practice keeps it in scope. Algebra — expressions with letter-numbers and simple one-variable equations — moved to Class 7, as chapters 4 and 15 of that book. Decimals moved to Class 7 too, into A Peek Beyond the Point and Another Peek Beyond the Point, so the "Fractions and Decimals" bullet is only half-covered by this year's book. Our Class 6 practice does not carry algebra or decimals as olympiad-scope topics; the taxonomy has exactly one Class 6 maths topic outside the book and it is the proportion one. It runs the other way as well, which is the more cheerful half: Ganita Prakash now teaches integers in Class 6 (The Other Side of Zero) while Humming Bird does not name integers until its Class 7 list, so on that topic the school book is a year ahead of the paper. The mapping in the table above is ours, not the body's — Humming Bird publishes topic names with no map to the new book.