根据倒数的意义:“乘积是1的两个数互为倒数”。一般地说,若a≠0,而且a×1a=1,则a和1a互为倒数,所以求一个数(0除外)的倒数,只要把这个数的分子、分母调换位置就可以了。一、求自然数(0、1除外)的倒数因为任何自然数均可写成分母是1的假分数,所以一个自然数的倒数,就是用这个自 According to the meaning of the reciprocal: “the product is a reciprocal of the two numbers 1”. In general, if a ≠ 0 and a × 1a = 1, then a and 1a are mutually reciprocal. Therefore, to find the reciprocal of a number (except 0), just change the numerator and denominator of this number. First, find the natural number (except 0,1) of the reciprocal Because any natural number can be written as the denominator is a fraction of 1, so the reciprocal of a natural number is to use this from