ເນາະ nɔ̄      is one of a number words called utterance-final particles that occur at the end of sentences.   Particles may be question words like bɔ̄ɔ  ບໍ.         ເນາະ  nɔ̄         indicates that the speaker expects an affirmative answer.         

'One o'clock' is móoŋ nȳŋ ໂມງໜຶ່ງ      not nȳŋ mōoŋ ໜຶ່ງໂມງ.          All other numbers precede móoŋ ໂມງ.     1.30 is móoŋ khǝ̄ŋ ໂມງເຄີ່ງ         with nȳŋ ໜຶ່ງ               dropping out. khǝ̄ŋ   by itself   means "1/2."

  '11' is síp-ét ສິບເອັດ       not síp-nŷŋ.