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Grammar detail: Basic Japanese Numbers

Basic Japanese Numbers
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Zero to Ten

NumberKanjiHiraganaOther Reading
0ぜろれい
1いち
2
3さん
4よん
5
6ろく
7しちなな
8はち
9きゅう
10じゅう
The number 0 is often said as ぜろ (a loan word from English, usually written in katakana). However, れい is also commonly used, so it is useful to learn both. The kanji for れい is 零, but this kanji is not used very often in everyday writing.
Numbers 4 and 7 are slightly irregular. When these numbers are used on their own, you can use either the
おんよ
音読
み (onyomi) readings (4 = し, 7 = しち) or the
くんよ
訓読
み (kunyomi) readings (4 = よん, 7 = なな). However, when the numbers are used in larger numbers (above 10) or with counters, either reading is technically correct, but よん and なな are much more common. For example:
よんひゃく
四百
(400) and
ななまん
七万
(70,000).
The common reading for 9 is きゅう. However, く is used in a few set expressions or with certain counters. For example, 九時(くじ) means “9 o’clock.”

Eleven to Nineteen

After 10, Japanese numbers follow a simple pattern - じゅう + the number that follows it.
11十一じゅういち
12十二じゅうに
13十三じゅうさん
14十四じゅうよん/じゅうし
15十五じゅうご
16十六じゅうろく
17十七じゅうなな/じゅうしち
18十八じゅうはち
19十九じゅうきゅう

Twenty to Ninety Nine

To form numbers in the tens; 20, 30, 40, etc., the structure is the first number + じゅう.
20二十にじゅう
30三十さんじゅう
40四十よんじゅう
50五十ごじゅう
60六十ろくじゅう
70七十ななじゅう
80八十はちじゅう
90九十きゅうじゅう
し and しち will rarely be used with straight 40 or 70.
Past ten, Japanese is completely regular, so counting is as simple as putting the number of tens with the number of ones. So for example:
  • 57 = 五十七 (ごじゅうなな) = five tens + seven
  • 99 = 九十九 (きゅうじゅうきゅう) = nine tens + nine
  • 44 = 四十四 (よんじゅうよん) = four tens + four

Hundreds

The number for 100 is ひゃく. To form numbers in the hundreds (100, 200, 300, etc.), the structure is the first number + ひゃく.
100ひゃく
200二百にひゃく
300三百さんびゃく
400四百よんひゃく
500五百ごひゃく
600六百ろっぴゃく
700七百ななひゃく
800八百はっぴゃく
900九百きゅうひゃく
Note: Most hundreds are made by saying the number + ひゃく, but the sound for numbers 300, 600 and 800 changes to make pronunciation smoother.
To make numbers between 100 and 999, follow the same pattern you used for tens: hundreds + tens + ones.
Say the hundreds part first, followed by the remaining number/numbers.
  • 106 = 百六 (ひゃくろく)
  • 230 = 二百三 (にひゃくさん)
  • 658 = 六百五十八 (ろっぴゃくごじゅうはち)

One Thousand and Ten Thousand

The next large units in Japanese are one thousand and ten thousand.
1000せん
10000まん
Note: The number 10,000 can be written as
まん
or
いちまん
一万
. Both are correct. When counting or reading numbers,
いちまん
一万
is more common because it clearly shows the “one” before 万.
You form numbers with these in the same way as the hundreds and tens: say the large unit first, then add the hundreds, tens, and ones after it. For example:
  • 2000 = 二千(にせん)
  • 6000 = 六千(ろくせん)
  • 5840 = 五千八百四十(ごせんはっぴゃくよんじゅう)
  • 19000 = 一万九千(いちまんきゅうせん)
  • 27000 = 二万七千(にまんななせん)
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Kanji used in this grammar

イチ   イツ   ひと    ひと- one   
ニ   ふた    ふた two   
サン   み    みっ three   
シ   four   よ    よ    よっ    よん    
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ゴ   いつ-    いつ five   
ロク   むっ six   む    むい    む    
シチ   なな    なな    なの seven   
ハチ   や    や    よう eight   
ク   キュウ   ここの nine   
ジュウ   ジッ   と    とお ten   
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レイ    zero   
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オン   イン   sound   おと    ね    
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ドク   トク   トウ   よ to read   
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クン    teaching, precept; Japanese reading of a kanji   
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ヒャク    hundred; 100   
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マン   バン    10,000   
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ジ   とき time, occasion   
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セン   1000; thousand   ち 1000   
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