五年制小学数学教材把整数的认识分为“二十以内”、“百以内”、“万以内”、“多位数”四个阶段。前三个阶段已在一至四册中完成,最后一个阶段,即多位数的读法和写法,安排在第五册第一单元。通过这一单元的教学,要使学生认识从“万”到“千亿”之间各个计数单位的名称、排列顺序和相互关系,掌握十进制计数法;掌握整数数位顺序表,能正确地读、写多位数;会把 Five-year primary school mathematics textbooks to the understanding of integers into “less than twenty”, “less than one hundred”, “within”, “multi-digit” four stages. The first three stages have been completed in one to four volumes. The final stage, that is, multi-digit reading and writing, is arranged in the first module of Volume V. Through the teaching of this unit, students should know the names, arrangement order and interrelationships of various units of counting from “Wan” to “Hundreds of Billion” and master the decimal counting method. Mastering the order table of integer digits can correctly read, Write multi-digit; will put