created sense approved 二一添作五 · èryītiānzuòwǔ · abacus rule
二一添作五
èryītiānzuòwǔ
abacus rule
a division rule in abacus reckoning where one divided by two equals zero point five
老账房先生口中念念有词，背着‘二一添作五’的珠算口诀。
created sense approved 二一添作五 · èryītiānzuòwǔ · go fifty-fifty
二一添作五
èryītiānzuòwǔ
go fifty-fifty
to share or divide something equally between two parties
这笔奖金咱们二一添作五，每人分一半。