80
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- 1 80
This is the basic cardinal number meaning “eighty” or “80,” used for quantities, ages, prices, and other numerical values.
80
It expresses the number or quantity 80, including ages, prices, and percentages.
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คุณปู่อายุแปดสิบปี khun pùu aayú pɛ̀ɛtsìp pii My grandfather is eighty years old. คุณปู่อายุแปดสิบปี details
Learning notes
Explanation
แปดสิบ is formed from แปด (“eight”) and สิบ (“ten”) and means 80. When counting people or things, the usual pattern is “noun + แปดสิบ + classifier.” For example, นักเรียนแปดสิบคน means “eighty students.” It is also used directly before units, as in แปดสิบบาท (“80 baht”) and อายุแปดสิบปี (“80 years old”). It is standard in both speech and writing.
Usage
It is commonly used when stating prices, quantities, ages, times, distances, scores, percentages, and other values equal to 80.
Caution
แปด by itself means “eight,” not “eighty”; สิบ is required. When counting people or objects, an appropriate classifier normally follows the number.