Teens
By now you should be comfortable with numbers 1 to 10. Let's now add teen numbers to your list. As you can see, they are formed with the number followed by "надесет":
- 11 – единадесет
- 12 – дванадесет
- 13 – тринадесет
- 14 – четиринадесет
- 15 – петнадесет
- 16 – шестнадесет
- 17 – седемнадесет
- 18 – осемнадесет
- 19 – деветнадесет
In spoken language, "надесет" is most often shortened to "найсет" (единайсет, дванайсет, etc.)
Tens
Now let's see the numbers for the tens. They are also quite straightforward, made from the number followed by "десет". Some of them also have a shorter form, that is preferred in spoken language:
- 20 – двадесет / двайсет
- 30 – тридесет / трийсет
- 40 – четиридесет / четиресет
- 50 – петдесет
- 60 – шестдесет / шейсет
- 70 – седемдесет
- 80 – осемдесет
- 90 – деветдесет
Those can be combined with numbers 1 to 9 to form any numbers between 20 and 99:
- 21 – двадесет и едно*
- 32 – тридесет и две*
- 46 – четиридесет и шест
- 99 – деветдесет и девет
* like for single digits, numbers ending in 1 or 2 vary according to gender (един/една/едно and (два/две)
Hundreds
- 100 – сто
- 200 – двеста
- 300 – триста
- 400 – четиристотин
- 500 – петстотин
- 600 – шестстотин
- 700 – седемстотин
- 800 – осемстотин
- 900 – деветстотин
With these, you can now form any number between 1 and 999.
Note that the conjunction и is added before the last word:
- 104 - сто и четири
- 264 - двеста шейсет/шестдесет и четири
- 999 - деветстотин деветдесет и девет
Thousands and more
- 1,000 - хиляда
- 1,000,000 - един милион
- 1,000,000,000 - един милиард
In bigger numbers, и is added before the last word of each group of three digits:
- 100,176 - сто хиляди сто седемдесет и шест
- 101,176 - сто и една хиляди сто седемдесет и шест
- 219,176 - двеста и деветнадесет хиляди сто седемдесет и шест
Also note that unlike in English, the words for "thousand", "million" and "billion" are used in their plural forms when there are more than one. The numeral plural also applies as it should, to masculine numbers:
- три хиляди - three thousand
- два милиона - two million