笔者在2011年本刊上曾发表过类似的文章,今天再谈珠算开方,旨在让人们了解珠算能开任意次方,在数理化、工程技术方面也有应用的空间,这也是珠算作为文化遗产的价值之一。但要用珠算开方,首先要熟悉珠算多位乘、除法的运算,在多位数乘法方面要用破头乘法;其次就是要有耐心、细心,在学会基本方法后,勤加练习,就会得心应手;算盘应选用档位多的,如十七档算盘。 The author published a similar article in this magazine in 2011. Today we talk about the method of calculating abacus, which aims at letting people know that abacus can be applied in any number of places. There is also room for application in mathematical physics and engineering. This is also why abacus as a culture One of the values ​​of heritage. However, to use the abacus formula, we must first be familiar with abacus multiplication and division operations, multiplicative multiplication should use broken head multiplication; followed by patience and careful, after learning the basic methods, diligently practice Will be handy; abacus should use more stalls, such as seventeen abacus.