Class 3 · Mathematics · New NCERT
Chapter 9: House of Hundreds – II
"House of Hundreds - II" continues the place-value journey begun in Part I. Having built understanding of hundreds, tens and ones, children probably work with larger numbers and operations such as addition and subtraction with regrouping, and with comparing and ordering. The preface advises that ideas will recur across chapters, so this chapter revisits and extends earlier work rather than starting anew. Place-value charts, bundles and diagrams remain useful. Children should be asked to explain why a method works, not just to carry it out, which is the book's main route to confidence.
This is chapter 9 of 14 in Maths Mela, the Class 3 Mathematics textbook, and begins on page 117 of the printed 2026-27 book. It follows "Fair Share" and is followed by "Fun at Class Party!".
Mathematics in this book is learnt through doing, talking and noticing. For "House of Hundreds – II", children are expected to work with objects first, then pictures, then numbers and symbols, and to explain their thinking aloud. Sections such as Let us Do, Let us Think and Let us Discuss (and, in the early classes, Oral Math Talk, Skill Practice and Math Games) give each idea more than one way in. Wrong answers are useful: they show how the child is thinking and where a new example or material would help.
A good follow-up to "House of Hundreds – II" is to pose a similar question from daily life, at the market, in the kitchen or on the way to school, and let the child think aloud. Draw the situation together if it helps. Short, regular practice is better than one long session, and games are as valuable as exercises.
This overview is written from the 2026-27 textbook's Contents page, its preface and the chapter title, to help families and teachers prepare. Please read the chapter itself for exact content, activities and exercises.