Today, Roman numerals are used mostly for formal copyright dates, and as "Model designation" for manufactured objects as "The Such-and-such Model IV, Model V", etc
We still use Roman numbers today. One place where you often see Roman numbers is on a clock face. We generally make use of less of Roman Numerals.3604262 in roman numerals is MMMDCMMMMCCLXII.
Roman Numerals are not used in calculations, because there is no easy way to do them, as there is with the decimal numbers that we use today.
I use roman numerals in math
Some use roman numerals because some doesn't know numbers, so instead it is roman numerals.
Some countries only use Roman Numerals, so they use it a lot.
For rules relating to the use of Roman numerals see related links.
IVVIX is 1960 in Roman Numerals.
they use roman numerals in films to show you when it was made but i dont know about any countries that use it
Tradition, and also because Roman numerals are more recognisable than ancient Greek numerals.
Most people don't understand Roman numerals so movie makers use these numerals to disguise the fact when the movie was actually released. +++ How do you "know" without asking them, that "most" people don't understand Roman numerals (they can always find out!), and why should film-makers want to disguise release dates? Roman numerals have always been common in publishing generally.
We do use Roman numerals today. For example, Roman numerals are often found in making outlines; to label book chapters; to label the frontmatter (pages) in books.
Because many peoples in many countries are not knowing Roman numerals, so we didn't use Roman everywhere.