Math · Topic 32 of 124
Measuring Length
⭐ MasteredLength is measured in millimetres, centimetres, metres and kilometres. There are 100 centimetres in a metre and 1,000 metres in a kilometre.
💡 Fun fact
A human hair is about 0.1 millimetres thick.
All about Measuring Length
Length is how long something is. Small lengths are measured in millimetres and centimetres. Longer distances are measured in metres and kilometres.
Choosing the right unit makes measurements easier to understand.
A ruler, a tape measure or a trundle wheel can be used to measure length. Always choose a unit that suits the size of the thing you are measuring.
🎮 Try it yourself!
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Real-life uses of Measuring Length
- Measuring a bedroom for new furniture
- Measuring how tall you have grown
- Working out how far a walk to school is
Frequently asked questions about Measuring Length
How many centimetres are in a metre?
100 centimetres.
How many metres are in a kilometre?
1,000 metres.
How do you measure with a ruler accurately?
Line up the zero mark with the start of the object, then read the mark at the other end and read from the eye directly above it.