珠算多位数乘除新法

• 作 者: 赵访熊
• 出 处: 科学大众
• 发表日期: 1965年09期
• 关键词: 多位数乘法 留头乘法 悬珠 比用 法时 位同 起拨 底珠 商除 它比

用算盘来作多位数加减法,要比用手搖計算机快一些。不过用旧法在算盘上作多位数乘法就比較难些,作多位数除法就更困难些。珠算多位数乘除旧法困难在哪里,有沒有办法克服呢? 珠算乘法的困难首先以238×462=109956为例来說明旧的珠算乘法的困难。用算盘作乘法时,被乘数238放在最左三档上;

Using abacus for multi-digit addition and subtraction is faster than using a hand-held computer. However, multi-digit multiplication on the abacus by the old method is more difficult, and multi-digit division is even more difficult. What is the difficulty of the multi-digit multiplication of abacus by the old method? Is there any way to overcome it? The difficulty of multiplication of abacus is to use 238×462=109,956 as an example to illustrate the difficulty of the old multiplication of abacus. When using the abacus for multiplication, the multiplicand 238 is placed on the leftmost third gear;