Metric Units of Length

Conversions of metric units of length:

1 km = 1000 m

1 m = 100 cm

1 cm = 10 mm

To convert a larger unit of length to a smaller unit of length, multiply.

To convert a smaller unit of length to a larger unit of length, divide.

To compare two different units of length, first convert them to same unit and then compare.

For example, to compare 7 cm and 80 mm, we first convert 7 cm to mm.

7 cm = 7 x 10 mm     (As 1 cm = 10 mm)

         = 70 mm

Now, we can compare 70 mm and 80 mm.

70 mm is shorter than 80 mm.

So, 7 cm is shorter than 80 mm.