小数点
Chinese
| For pronunciation and definitions of 小数点 – see 小數點 (“radix point; decimal point”). (This term is the simplified form of 小數點). |
Notes:
|
Japanese
| Kanji in this term | ||
|---|---|---|
| 小 | 数 | 点 |
| しょう Grade: 1 |
すう Grade: 2 |
てん Grade: 2 |
| on’yomi | ||
| Alternative spellings |
|---|
| 小數點 (kyūjitai) 少数点 |
Usage notes
A decimal point itself is pronounced as てん (ten, literally “dot”). For example, 9.58 is pronounced as きゅうてんごーはち (kyū ten gō hachi, literally “nine point five eight”) and 19.19 is pronounced as じゅうきゅうてんいちきゅう (jū-kyū ten ichi kyū, literally “ten-nine point one nine”).
| ９ | きゅう (kyū) |
| ・ | てん (ten) |
| ９ | きゅう (kyū) |
| ８ | はち (hachi) |
In vertical writing, [[.]] is replaced with ・. For example, 9.98 is written as 9・98 in vertical writhing. However its pronunciation does not change.
There is some exception. てん (ten, literally “dot”) is sometimes replaced with コンマ (konma, literally “comma”), especially when integer part is zero. For example, 0.31 is normally pronounced as れいてんさんいち (rei ten san ichi, literally “zero point three one”) or exceptionally pronounced as れいコンマさんいち (rei konma san ichi, literally “zero comma three one”). In this case, integer part is sometimes omitted to pronounce. 0.3 can be read as コンマさん (konma san, literally “comma three”).
Derived terms
- 浮動小数点 (fudō shōsūten, “floating point representation”)
- 浮動小数点演算機構 (fudō shōsūten enzan kikō, “floating-point arithmetic unit”)