Measuring Length
CBSE · Class 4 · Mathematics
Quick revision notes for Measuring Length — CBSE Class 4 Mathematics. Key concepts, formulas, and definitions for last-minute revision.
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Key Topics to Revise
1. Length, Height, Width, Depth, and Breadth
- Height, width, depth, and breadth are all words used for length measurement.
- These words are used in different situations and directions.
- A classroom door, an arm, a blackboard, and a box can all be measured for length in different ways.
2. Metre and Centimetre
- A standard metre scale is divided into 100 equal parts.
- The distance between two marks on the measuring tape is 1 centimetre.
- 1 metre is divided into 100 such 1 cm distances.
3. Measuring Small Things
- Small things like an eraser or a rice grain need centimetres for measurement.
- The measuring tape has red bars that help show centimetres.
- The length of each red bar is 1 cm.
4. Estimating and Measuring with Real-Life Actions
- Students can walk, jump, and crawl on lines of 1 m, 5 m, and 10 m to develop estimation skills.
- Children can measure 100 m using their footsteps and count how many footsteps fit in 100 m.
- Estimation helps compare lengths before measuring exactly.
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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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