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常识“损乘”是什么意思,起源、典故、生平简介及释义-历史文化

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词汇 损乘
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释义 损乘古代算学术语。筹算乘除捷算法之一种。杨辉《乘除通变本末》所载相乘六法之一,是一种以减代乘的算法。如当乘数为某个位数时,其法不是直接计算被乘数与乘数之积,而是先算出被乘数与10减去乘数所得差之积,此积在算法中称为“损数”,然后从被乘数的十倍中减去损数即得所求。该算法一般用于乘数接近10、100、1000的情形。
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