Counting by 10s: names of the numbers from 10 to 90 are as follows:
10: On - Ten
20: Yirmi - Twenty
30: Otuz - Thirty
40: Kırk - Fourty
50: Elli - Fifty
60: Altmiş - Sixty
70: Yetmiş - Seventy
80: Seksen - Eightly
90: Doksan - Ninety
Counting by 100s: name of the numbers from 100 to 900 are as
below. Note that (a) hundred is "Yüz" but then similar to English, just like we say
"two hundred" we put together the next number and "yüz", e.g. for two hundred
"iki + yüz" = "iki yüz", and so on:
100: Yüz - (One) hundred
200: İki yüz - Two hundred
300: Üç yüz - Three hundred
400: Dört yüz - Four hundred
500: Beş yüz - Five hundred
600: Altı yüz - Six hundred
700: Yedi yüz - Seven hundred
800: Sekiz yüz - Eigh hundred
900: Dokuz yüz - Nine hundred
To say 1000: we say "Bin"