score:6
As near as I can tell, it is standard Army practice to label hills in an operating area by their height in meters. That means for all those hills you listed, the number is their height. This is probably also why the important hills near the coast tend to have smaller numbers.
This practice does not appear to have changed recently, so I'd assume it is still going on. I don't know how far back it goes, but obviously prior to the French Revolution it at least would have had to be some other unit of measure.