What are Measurements of Length?

What are Measurements of Length?

Measurement of Length 

 

We measure small lengths in cm and mm and large lengths (i.e. distances) in m and km. Standard unit of length is ‘Meter’ which is written in short as ‘m’. 

 

1 m length is divided into 100 equal divisions. Each division is known as centimetre and written as ‘cm’.  

Therefore, 1 m = 100 cm 

 

The largest unit that distance is measured in is kilometre. 1 km length is divided into 1000 equal divisions. Each division is termed as meter. Therefore, 1 km= 1000 m 

 

Let us look at the length conversion chart- 

 

 

 

According to the length conversion charts, units of lengths and their equivalents are: 

  • 1 kilometre (km) = 10 Hectometres (hm) = 1000 m 

  • 1 Hectometre (hm) = 10 Decametres (dam) = 100 m 

  • 1 Decametre (dam) = 10 Meters (m) 

  • 1 Meter (m) = 10 Decimetres (dm) = 100 cm = 1000 mm 

  • 1 Decimetre (dm) = 10 Centimetres (cm) 

  • 1 Decimetre = 0.1 Meter 

  • 1 Centimetre (cm) = 10 Millimetres (mm) 

  • 1 Centimetre = 0.01 Meter 

  • 1 Millimetre = 0.001 Meter 

 

Note: 

 

  • 1 mile = 1760 yards 

 

  • 1 mile = 5280 feet 

 

  • 1 yard = 3 feet 

 

  • 1 foot = 12 inches 

 

 

Conversion 

 

While converting from a larger unit to a smaller unit, we multiply 

Example 1:    km → m 

                    1 km = 1000 m 

                    Therefore, 5 km = 5 x 1000 = 5000 m 

Example 2:    m → cm 

                    1 m = 100 cm 

                    Therefore, 4 m = 4 x 100 = 400 cm 

 

Example 3:    hm → dm 

                    1 hm = 1000 dm 

                    Therefore, 20 hm = 20 x 1000 = 20000 dm 

 

While converting from a smaller unit to a larger unit, we divide 

Example 1:    mm → cm 

                    1 mm = 1/10 cm 

                    Therefore, 20 mm = 20/10 cm = 2 cm 

 

Example 2:    dm → dam 

                    1 dm = 1/100 dam 

                    Therefore, 300 dm = 300/100 dam = 3 dam 

 

Example 3:    cm → m 

                    1 cm = 1/100 m 

                    Therefore, 150 cm = 150/100 m = 1.50 m 

 

 

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