あんざん
暗算
mental arithmetic
N3Noun
Noun, Suru verb, Transitive verb
mental arithmetic
Example Sentences
彼は暗算をするほど頭が良くない。
He doesn't have enough brains to do sums in his head.
mental arithmetic
彼は暗算をするほど頭が良くない。
He doesn't have enough brains to do sums in his head.