Use of unit abbreviations in Japanese


Are unit abbreviations like _mm_ for _millimetres_ or _%_ for _percent_ used
in Japanese?  
I've seen people translate those two words in to _ミリメートル_ and _パーセント_
respectively and that is what makes me raise this question.




In written Japanese the abbreviations mm, kg, km, mg, cm, ml etc. are used as
early as the second year of primary school. Their correct pronunciation is
ミリメートル, キログラム, キロメートル, ミリグラム, センチメートル, ミリリットル respectively. In everyday
language, mm and ml are abbreviated to ミリ (although ミリグラム seems to stay as is;
see comments below), kg, km are abbreviated to キロ and cm to センチ.




In written Japanese the abbreviations mm, kg, km, mg, cm, ml etc. are used as
early as the second year of primary school. Their correct pronunciation is
ミリメートル, キログラム, キロメートル, ミリグラム, センチメートル, ミリリットル respectively. In everyday
language, mm and ml are abbreviated to ミリ (although ミリグラム seems to stay as is;
see comments below), kg, km are abbreviated to キロ and cm to センチ.

