Class 4 (CBSE) • MathematicsChapter 6: Measuring Length⭐ Topic 1
Standard Units of Length
We use standard units, like centimetres, metres, and kilometres, to measure length accurately and consistently.
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Centimetres (cm) measure small lengths, like a pencil. Metres (m) measure medium lengths, like a room. Kilometres (km) measure long distances, like between cities.
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- Centimetres measure small lengths.
- Metres measure medium lengths, like a room.
- Kilometres measure long distances, like between cities.
- Standard units are the same everywhere.
- 1 metre = 100 centimetres.
- 1 kilometre = 1000 metres.
- Using the right unit makes measurements clear.
- Standard units allow accurate, consistent measurement.
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standard units of length