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guan yu gen zong cheng de fen lei yu ying yong
Author(s): 
Pages: 17-19
Year: Issue:  5
Journal: Zhusuan and Zhuxinsuan

Keyword:  跟踪计算被乘数跟踪算法数字倍数关系字的乘积分段跟踪变式算理算法运算速度;
Abstract: <正> 在珠算乘法运算中,遇到乘数中原数或经调整、分解、拆开、变式后的数组中,有相同、近似和有倍数关系的数字或邻近两数和为9(即为9的倍数)的数字时,可先求出其中某一位数与被乘数的乘积,而后其他数字
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