30
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- 1 30
This is the basic Thai number for thirty (30), literally formed as “three tens.”
30
It expresses the number thirty when counting people or things and stating ages, prices, times, and other quantities.
Learning notes
Explanation
สาม means “three,” and สิบ means “ten,” so สามสิบ is literally “three tens,” or 30. When counting objects, the usual order is noun + สามสิบ + classifier. For example, หนังสือสามสิบเล่ม means “thirty books,” and นักเรียนสามสิบคน means “thirty students.” With ages, prices, and units of time, the unit follows the number directly, as in สามสิบปี “thirty years/thirty years old,” สามสิบบาท “thirty baht,” and สามสิบนาที “thirty minutes.” The word is neutral and common in both speech and writing.
Usage
It is used throughout everyday life for counting people and objects and for stating ages, prices, times, durations, dates, percentages, and other quantities.
Caution
สิบสาม means “thirteen,” while สามสิบ means “thirty,” so word order matters. For the ordinal “thirtieth,” use ที่สามสิบ rather than สามสิบ alone.