subtraction

IPA/səbˈtrækʃn/
KK[səbtrˈækʃən]IPA/səbˈtrækʃn/

subtraction — 名詞

1. In arithmetic, finding how many remain when a smaller number is taken away from

1.名詞A2
釋義

減法

求兩數差值的算術運算

In arithmetic, finding how many remain when a smaller number is taken away from a larger one — the opposite of addition.

例句

The teacher showed how subtraction helps solve problems like working out change at a shop.

老師示範了減法如何幫助解決日常問題，例如計算商店該找多少零錢。

uncountable noun referring to the general operation

Luca learned to do subtraction by counting backward on his fingers in maths class.

Luca 在數學課上學會了用手指倒數來做減法。

collocation: do subtraction

常見搭配
  • simple subtraction
  • quick subtraction
  • basic subtraction
  • do subtraction
  • learn subtraction
  • practise subtraction
  • subtraction problem
  • subtraction sign
  • subtraction of A from B
同義詞
  • taking away

    informal phrase used especially with children; less technical than subtraction

  • deduction

    emphasises removing an amount from a total; common in financial or logical contexts

  • minus

    used as a preposition or adjective in arithmetic, not a direct noun synonym

反義詞
  • addition

    the opposite arithmetic operation; adding numbers together instead of taking one away from another

文法句型

subtraction + of + noun + from + noun

用法筆記

Usually uncountable when referring to the mathematical operation in general. May be used with the indefinite article when referring to a specific calculation (e.g. a quick subtraction).

常見錯誤

I did a subtract.
I did a subtraction.
subtract is a verb, not a noun.
The subtraction of 5 and 3 equals 2.
The subtraction of 3 from 5 equals 2.
use from, not and, to show which number is taken from which.

同根字

常見搭配

名詞搭配

常用片語

  • subtraction of A from B
  • addition and subtraction

介系詞搭配