三行一位数相加的求和方法探析

Study on the Sum Method of Adding Three Rows of Digits

在进行珠算一目三行同位数连加法的教学过程中，引导学生熟练掌握三行一位数之和是个关键。指导教师应因材施教，有针对性地分别采用心算法、口诀算法和交换律法等方法，并分步进行组织练习，使学生能够科学的运用三行一位数相加的求和方法及其规律性，尽快掌握三行一位数之和。

It is key to guide the students to grasp the sum method of adding three rows of digits in the teaching process of how to use abacus. Instructors should teach students according to their aptitude, and use respectively heart algorithm, mantra one and exchange one and organize practice step by step to make the students use and master the sum method as soon as possible.