Hi I am sure you get a lot of questions but I just wanted your opinion I am working on an original language for a species I created and recently came up with the words for the numbers 1- enna 2- diem 3- suda 4- tresa 5- lesem 6- cetra 7- sieve 8- solus 9- nelem 10- jhet 11- ennana 12- enna diem Etc. 20- diem jhet or 2 tens 0- nuan Does that look right? Or could I do something different?
You can do any number of things when it comes to creating numerical systems. Right now, the system you have is a base-10 system with a slightly irregular form for 11. This is approximately equivalent to Korean’s number system, if I remember right, except Korean’s has a regular formation for 11, as well. So, the short answer, is, yes, this works. It’s not the only thing that could be done by a long shot, though. Other base ten systems (like English’s, for example) are less compositional (our words for 11 and 12 are irregular), and there are plenty of languages that use bases other than 10—and mixtures of bases. For example, one common method is to use base-20 with the numerals 1-20 and then switch to base-10 thereafter. French is even more bizarre, using base-10 up to 60, and then base-20 thereafter up to 100. To take a look at how counting in different bases works, I recommend this site, which I use all the time to calculate numerals for Castithan, Irathient and Indojisnen, which use base-20, base-20 and base-7 systems, respectively.
Of course, of the many, many things you could do, the only thing that really matter is what you want to do. It is your language, after all. :)