tekau
1. (numeral) ten, 10 - originally it meant 20 as it, or its cognate forms, do in other eastern Polynesian languages. Tekau combines with other words to form the numbers from 11 to 99.
(Te Kākano Textbook (Ed. 2): 5; Te Māhuri Study Guide (Ed. 1): 12;)
Kotahi rau e toru tekau mātau i te kura (HP 1991:32). / There were one hundred and thirty of us in the school.
2. (numeral) tenth - when used with this meaning it is preceded by te and followed by o.
(Te Kākano Textbook (Ed. 2): 5; Te Māhuri Study Guide (Ed. 1): 12;)
Nō te tekau o Ākuhata ka haere mātou. / On the tenth of August we departed.