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Author:
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Year:
Volume:
Issue:
guan yu gen zong cheng de fen lei yu ying yong
Author(s):
MA Zhongxing
Pages:
17
-
19
Year:
1998
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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