arithmetic

算数、算術

足し算、引き算、掛け算、割り算など、数を使う基本的な計算。

やさしい英語で： Basic maths using numbers to add, take away, multiply, and divide.

• We learn arithmetic at school.
• Check your arithmetic before paying the bill.
• She can do difficult arithmetic in her head.

類義語： calculation

よく使う表現： mental arithmetic, basic arithmetic

算術の、算数の

足し算や割り算など、数を使った計算に関する。

やさしい英語で： Related to calculations with numbers, such as adding and dividing.

• The computer performs arithmetic operations quickly.
• An arithmetic error changed the total.
• Calculate the arithmetic mean of these five numbers.

類義語： arithmetical

よく使う表現： arithmetic operations, arithmetic error, arithmetic mean

等差の

一段階ごとに同じ量ずつ増えたり減ったりする。

やさしい英語で： Increasing or decreasing by the same amount at each step.

• These numbers form an arithmetic sequence.
• An arithmetic progression has a constant difference between neighbouring terms.
• We compared arithmetic and geometric growth.

類義語： linear

よく使う表現： arithmetic sequence, arithmetic progression