The antonyms of *additions* are *subtraction* and *reduction*. While *subtraction* is a specific mathematical operation, *reduction* is a more general term that describes the act of making something smaller or less. Use these words in mathematics, business, cooking, and other contexts where they are relevant.

이익을 계산하려면 수익에서 비용을 공제하여 *뺄셈*을 해야 합니다.

利益を計算するには、収益から費用を差し引いて*減算*する必要があります。

In order to calculate the profit, we need to do *subtraction* by deducting the expenses from the revenue.

회사는 경기 침체로 인한 인력 *감축*을 발표했습니다.

同社は、景気後退による労働力の*削減*を発表しました。

The company announced a *reduction* in workforce due to the economic downturn.