How is the decimal system realized to the metric system?

1 millimetre is 0.1 of a centimetre

1 centimetre is 0.1 of a decimetre

1 decimetre is 0.1 of a metre

1 metre is the basic unit of measure

1 decametre is 10 metres

1 hectometre is 10 decametres

1 kilometre is 10 hectometers

in the example would be

1 m, 25

12dm, 5

125cm

u just do x10 (x100, x1000 ...) if u use a smaller unit (from m to cm or m to mm)

or : 10 (:100,:1000 ...) if u use a a bigger one (from cm to m or m to km)

I'm not sure if this was what you were looking for.