fraction

一部分、わずかな部分

あるものの一部、特にごく小さな部分。

やさしい英語で： A part of something, especially a very small part.

• We paid only a fraction of the cost.
• She paused for a fraction of a second.
• Only a small fraction of the visitors stayed overnight.

使い方： a fraction of something (The repairs cost a fraction of the price of a new car.)

類義語： part, portion

反対語： whole

よく使う表現： a fraction of something, tiny fraction, fraction of a second

分数

２分の１や４分の３のように、上下に二つの数を書いて表す数。

やさしい英語で： A number written as one number over another, such as one half or three quarters.

• One half is a fraction.
• We learned to add fractions at school.
• Can you write this decimal as a fraction?

よく使う表現： add a fraction, simplify a fraction, proper fraction, equivalent fraction