Understanding 偶数 (ぐうすう)
偶数 means "even number" in Japanese and is a common mathematical term used from basic arithmetic to more advanced math. It specifically refers to integers divisible by 2 without a remainder.
Usage in Sentences
You will often see 偶数 used in educational contexts, such as explaining number properties or in math problems. For example, "偶数は2で割り切れる数です" clearly defines what an even number is.
Common Collocations and Patterns
- 偶数だけ (ぐうすうだけ): "only even numbers" – used when specifying a set or list containing exclusively even numbers.
- 偶数と奇数 (ぐうすうときすう): "even and odd numbers" – a common pair when discussing number classification.
- 偶数を区別する (ぐうすうをくべつする): "to distinguish even numbers" – used in educational or explanatory contexts.
Register and Usage Notes
偶数 is a neutral, standard term used in both spoken and written Japanese. It appears frequently in school settings, textbooks, and everyday conversation when discussing numbers.
Common Learner Mistake
Learners sometimes confuse 偶数 (even number) with 奇数 (odd number). Remember that 偶数 are divisible by 2, while 奇数 are not. Practicing with examples helps solidify this distinction.