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synonym Comparative
暗算
VS
心裡留保

Differences Between "暗算" and "心裡留保"

Option A
暗算
Meaning
mental arithmetic, calculation in one's head
Reading
あんざん (anzan)
Syllabus Level
N2
Practical Example
彼はどんな複雑な数字でも暗算で答えることができる。
He can answer any complex numbers by mental arithmetic.
Option B
心裡留保
Meaning
mental reservation
Reading
しんりりゅうほ (shinriryuuho)
Syllabus Level
C2
Practical Example
私は心裡留保に興味があります。
I am interested in mental reservation.

Which one to use?

Select the correct Japanese word for this context

Which word fits this context: "(mental arithmetic, calculation in one's head)"?
🎉 正解 / Correct!
使い分け解説:
- 暗算: Refers specifically to performing mathematical calculations without the aid of writing, a calculator, or abacus. It emphasizes the mental aspect.
- 心裡留保: Essential structural term in CEFR C2 vocabulary syllabus. (CEFR C2語彙シラバスにおける重要表現です。)
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