Since the Sindar consider the Elven writing systems as pretty useless, this lesson is optional.
Even though there is no word for "zero" in Sindarin that we know of, we are going to learn how to write it. This system was developed by the Noldor, so it does look quite similar to their writing system. Numbers as adjectives are spelled out, not written with number symbols.
Base Ten
 0 | ||
 1 |  2 |  3 |
 4 |  5 |  6 |
 7 |  8 |  9 |
Sometimes dots are put over the numbers to distinguish them from letters.
Now, as you recall, numbers are listed backwards in Sindarin. So, 2046 would be written 6402.
Eneg cangaen tadveneg "6402" = "2046"
Base Twelve
So, for counting in base-twelve, you need two more base numbers.
 10 |  11 |
Cae lephoth tolothveneg "10+0+5(122)+8(123)"
Homework
For your homework, write out the numbers and sentences from your previous homework, both Base Ten and Base Twelve.