Units of measurement (converting length units)

Basic conversion rules: 

1) If you need to convert from a LARGER unit to a SMALLER unit, MULTIPLY.
For example: 5km into metres: 5 x 1000= 5.000 metres

2) If you need to convert from a SMALLER unit to a LARGER unit, DIVIDE.
For example: 10cm into metres: 10 / 100= 0,1 metres