House of Hundreds - I
CBSE · Class 3 · Mathematics
Summary of House of Hundreds - I for CBSE Class 3 Mathematics. Key concepts, important points, and chapter overview.
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Overview
Numbers beyond 200 are built using hundreds, tens, and ones. This chapter shows how to count large collections, compare numbers, place numbers on a number line, and understand house numbers using place value. Matchstick bundles, sweet boxes, and number lines make the ideas easy to see.
Key Concepts
Large groups are counted by using
Large groups are counted by using tens and then ones. The triangular torans are counted as 250, which is 50 more than 200. The bangles are counted as
A three
A three-digit number has hundreds, tens, and ones. For example, 211 is 200 + 10 + 1. Arvind Dada’s sweet boxes also show the same idea: boxes of 100,
Some numbers can be written
Some numbers can be written in more than one way. For example, 235 can be shown as 200 + 35 or as 250 - 15. Both forms describe the same number.
A number line shows where
A number line shows where a number lies between two nearby numbers. For example, 235 lies between 200 and 250. Number lines also help find how far one
When comparing 321 and 231
When comparing 321 and 231, the hundreds digit decides because 3 hundreds are more than 2 hundreds. When comparing 209 and 290, both have two hundreds
Learning Objectives
- Count objects beyond 200 using careful skip counting and grouping.
- Read and write numbers in hundreds, tens, and ones.
- Compare three-digit numbers using the value of hundreds, tens, and ones.
- Place numbers on a number line and tell which numbers are between two given numbers.
- Understand house numbers as floor and column positions.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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