二一添作五

二一添作五

Literally means:

one divided by two is point five

Actually means:

divid evenly, be fair

This is a numeric rhyme for abacus,indicating 1:2 =0.5.

It figuratively means the money or resources being equally divided between two persons, with each side getting the half;or the total cost being evenly broken between two persons,with each action paying the half. It indicates fairness in a transaction.

珠算除法的口诀，表示1 ÷ 2 = 0.5。

比喻财物双方平分，各得一半，或费用双方平摊，各出一半。有公平合理，双方谁都不吃亏的意思。