New answers tagged relative-clauses
5
As Chocolate has already commented, it is very probably that たす and ひく originated from the teaching at そろばん塾 (soroban juku, abacus institute) which played a very important role as a private school especially in the Edo Period and has been very popular among school boys and girls even now.
Several decades ago, I was also taught calculation by the use of an ...
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