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0是最小的自然数,那么最小的一位数是“1”还是“0”呢?在0没有归入自然数以前,大家都很清楚,最小的一位数是1。那么现在0也成为自然数了,最小的一位数还是1吗?要回答这个问题,首先要弄清“几位数”的概念。在自然数的理论中,对“几位数”是这样定义的:只用一个有效数字表示的数,叫作一位数;只用两个数字(其中左边第一个数字为有效数字)表示的数,叫作两位数……所以,在一个数中,数字的个数是几(其中最左边第一个数字为有效数字),这个数就
0 is the smallest natural number, then the smallest one is “1 ” or “0 ”? 0 is not included in the natural number before, we all know, the smallest one is a digit. So now 0 has also become a natural number, the smallest one or 1? To answer this question, we must first find out the concept of “a few digits.” In the theory of natural numbers, “few digits ” is defined as follows: a number that is represented by only one significant digit is called a digit; only two digits (where the first digit on the left is a significant digit) The number of representations, known as double digits ... So, in a number, the number of the number is a few (the first leftmost digit is a significant figure), the number of