# Grade 4, Maths Olympiad (CBSE) - Length

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Grade 4 | Maths | Length, Length(conversions), Weight, Capacity, Olympiad, CBSE, ICSE, SOF, ITO

**Length**

Length is the measurement to determine how long or short a thing is.

There are various types of equipment and units to measure length.

**Non Standard unit: **Non-standard units are the units which are not frequently used as they bound to change from time to time and from person to person. E.g. if we use a hand as a unit to measure the distance then it is bound to change from person to person as the length of a person's hand will be different from another person.

**Standard unit:** Units which are widely accepted because they remain same over time and from person to person. E.g. centimeter, meter, kilometer inches, foot etc

**Conversion table**

100 centimeter | 1 meter |

1000 meter | 1 kilometer |

10 centimeter | 1 decimeter |

1000 millimeter | 1 meter |

10 millimeter | 1 centimeter |

**Things to remember:**

- Small things are measured in millimeter and centimeters. E.g. length of a pencil will be in centimeters.
- Length of person is in feets and inches
- Length of cloth is in meters
- Length of road is in kilometers and miles
- When measuring a length start with zero on the scale

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