在统编教材“数的整除”一章中,“整除”的概念是一个最基本最重要的概念。对这个概念所下的定义是否正确、严密,直接影响到后面的一些概念。在目前使用的教材和参考书中,对“整除”的定义还不完全一致,最常见的有下面两种:定义一:如果甲数是整数,乙数是自然数,甲数除以乙数,商正好是整数而没有余数,就叫甲数能被乙数整除。 In the textbook “Dividing Numbers”, the concept of “divisions” is one of the most basic and important concepts. The definition of this concept is correct, strict, directly affect some of the concepts behind. In the currently used textbooks and reference books, the definition of “divisibility” is not yet completely consistent. The most common ones are as follows: Definition 1: If a number is an integer, B is a natural number, a number divided by B, The quotient is exactly an integer without a remainder, called an integer divisible by B.