The Dorking Judo Club - Counting in Japanese

Counting in Japanese
NumberEnglishJapanese
1oneichi
2twoni
3threesan
4fourshi
5fivego
6sixroku
7sevenshichi
8eighthachi
9nineku
10tenju
20twentyni-ju
30thirtysan-ju
40fortyyon-ju
50fiftygo-ju
60sixtyroku-ju
70seventynana-ju
80eightyhachi-ju
90ninetykyu-ju
100one hundredhyaku

So, when you get to ten (ju), eleven is ten and one, or ju-ichi, twelve is ju-ni, thirty three is san-ju-san..and so on..