As a Norwegian I can confirm it's confusing when reading numbers written in English. In Norway we use million, milliard, billion, billiard, trillion, trilliard.

As a Norwegian I can confirm it's confusing when reading numbers written in English. In Norway we use million, milliard, billion, billiard, trillion, trilliard. But for a number such as '3 milliarder', one often writes '3.000 millioner' instead. Exactly why I don't know, but I would guess it has something to do with more accurately reflecting the size of the number. It might not be as clear that the number is 1000x the size with a simple change in the end of the word. The difference between a million and a billion is about a billion, after all. Speaking of confusion about numbers, just wait until you see how different countries divide up large numbers. Some countries, such as Norway write one million as 1.000.000,00 while others write it as 1,000,000.00.