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相反数是指只有符号不同的两个数,倒数是指乘积是1的两个数.它们是“有理数”一章中两个重要又易混淆的概念.两者都必须成对出现,单独的一个数既不能说是相反数,也不能说是倒数.其性质分别如下:相反数性质:若a、b互为相反数,那么a+b=0.倒数性质:若a、b互为倒数,那么ab=1.为帮助大家正确地理解、区分并掌握它们,现就其求法及应用给予介绍,供参考.
Opposite numbers refer to two numbers that differ only in sign, and reciprocal refers to two numbers whose product is 1. They are two important and confusing concepts in the chapter “Rational numbers.” Both must appear in pairs, A single number can neither be said to be the opposite, nor can it be said to be reciprocal. Their properties are as follows: the opposite number of nature: If a, b mutually opposite number, then a + b = 0. Count nature: For the countdown, then ab = 1. To help you to understand correctly, to distinguish and master them, is now on its method of law and application to introduce for reference.