This is the 1455th most frequent Japanese word.
確かめ
"確かめ" (たしかめ) means "confirmation" or "verification."
In this sentence, '確かめ' is used in the context of verifying or confirming a solution or an answer.
問題の答えを確かめました。
I checked the answer to the question.
Here, '確かめ' is utilized to mean checking or confirming the readiness or preparedness of an activity.
登山の準備を確かめる必要があります。
It is necessary to check the preparations for the mountain climbing.
In this usage, '確かめ' is used in the sense of ensuring or validating an agreement or understanding.