小しょう数すう

しょ

う

す

う

Common wordJLPTN2Freq.FrequencyTop 50,000

Meanings

1

noun, noun which may take the genitive case particle 'no'

decimal; decimal fraction

Refers to numbers with a decimal point, as opposed to integers or fractions written with a numerator and denominator. Common in mathematics and everyday contexts.

小しょう数すうの計けい算さんは小しょう数すう点てんの位い置

ち

に

気き

を

つけ

て

ください

。

When calculating with decimals, be careful about the position of the decimal point.

この問もん題だいの答こたえは小しょう数すうで表あらわしてください。

Please express the answer to this problem as a decimal.

Usage patterns

〈事こと〉を小しょう数すうで表あらわすto express something as a decimal
この割わり合あいを小しょう数すうで表あらわすと0.75になる。
When you express this ratio as a decimal, it becomes 0.75.
分ぶん数すうを小しょう数すうに直なおすto convert a fraction into a decimal
先せん生せいは分ぶん数すうを小しょう数すうに直なおす方ほう法ほうを教おしえてくれた。
The teacher taught us how to convert a fraction into a decimal.
小しょう数すう点てん以い下か〈数かず〉桁けたto (a certain number of) digits after the decimal point
答こたえは小しょう数すう点てん以い下か二に桁けたまで求もとめてください。
Please give the answer to two decimal places.
小しょう数すうを四し捨しゃ五ご入にゅうするto round off a decimal number
計けい算さん結けっ果かの小しょう数すうを四し捨しゃ五ご入にゅうした。
I rounded off the decimal in the calculation result.

Kanji

小little, small
数number, strength, fate

Opposites

整せい数すうN2
小数 is a number written with a decimal point (e.g., 0.5), while 整数 is a whole number with no fractional part (e.g., 5).

Don't confuse with

分ぶん数すうN2
分数 expresses a value as a ratio of two integers (e.g., 1/2), whereas 小数 expresses the same value with a decimal point (e.g., 0.5), so learners often mix up which term applies to which form.
少しょう数すうN3
小数 (also read しょうすう) means 'decimal fraction' in math, a completely different word from 少数 'small number/minority' despite the identical pronunciation.
小しょう数すう点てんN1
小数 refers to a decimal number itself (like 0.5), while 小数点 refers only to the dot symbol that separates its integer and fractional parts.

Word family· 10

小しょう数すう点てんN1
decimal point; radix point
純じゅん小しょう数すう
pure decimal; decimal with zero integer part
循じゅん環かん小しょう数すう
recurring decimal; repeating decimal

Etymology

Compound of 小 (small) and 数 (number), literally 'small number', referring to numbers smaller than one or expressed with a decimal point.

有ゆう限げん小しょう数すう

finite decimal; terminating decimal

無む限げん小しょう数すう

infinite decimal; nonterminating decimal

Show 5 more

十じっ進しん小しょう数すう
decimal fraction
固こ定てい小しょう数すう点てん数すう
fixed-point data
浮ふ動どう小しょう数すう点てん数すう
floating-point number
固こ定てい小しょう数すう点てんレジスタ
fixed-point register
浮ふ動どう小しょう数すう点てんレジスタ
floating-point register