(さんじゅう)

さんじゅう
number
thirty
1. thirty
The number thirty. Formed by combining (さん) (three) and (じゅう) (ten), literally meaning 'three tens.'
三十(さんじゅう)(えん)です
It's thirty yen.
三十(さんじゅう)(ぷん)()きます
I'll arrive in thirty minutes.
There are thirty students.
She is in her thirties. She looks very young.
It took thirty days to read this book. It was a very long book.

三十(さんじゅう) is the number thirty, formed from (さん) (three) + (じゅう) (ten).

NUMBER PATTERN:

Japanese numbers 20-90 follow this pattern: digit + (じゅう)

  • 二十(にじゅう) (20), 三十(さんじゅう) (30), 四十(よんじゅう) (40)

AGE DECADES:

三十(さんじゅう)(だい) means "in one's thirties." This pattern works for all ages:

  • 二十(にじゅう)(だい): twenties
  • 三十(さんじゅう)(だい): thirties
  • 四十(よんじゅう)(だい): forties

COMMON USES:

  • 三十(さんじゅう)(ぷん): 30 minutes
  • 三十(さんじゅう)(にん): 30 people
  • 三十(さんじゅう)(さい): 30 years old

NOTE:
(ぷん) uses the voiced reading ぷん after さんじゅう.