Question

-9，6，-3三個(gè)數(shù)的和比它們絕對(duì)值的和小    ．

Answer 1

【答案】分析：根據(jù)絕對(duì)值的性質(zhì)及其定義即可求解．
解答：解：（9+6+3）-（-9+6-3）=24．
答：-9，6，-3三個(gè)數(shù)的和比它們絕對(duì)值的和小24．
點(diǎn)評(píng)：本題考查了絕對(duì)值的意義，任何一個(gè)數(shù)的絕對(duì)值一定是非負(fù)數(shù)，同時(shí)考查了絕對(duì)值的性質(zhì)，要求掌握絕對(duì)值的性質(zhì)及其定義，并能熟練運(yùn)用到實(shí)際當(dāng)中．
絕對(duì)值規(guī)律總結(jié)：一個(gè)正數(shù)的絕對(duì)值是它本身；一個(gè)負(fù)數(shù)的絕對(duì)值是它的相反數(shù)；0的絕對(duì)值是0．