Question

7、絕對(duì)值大于5小于10的所有負(fù)整數(shù)的和是

-30

．

Answer 1

分析：利用絕對(duì)值性質(zhì)可得出絕對(duì)值大于5小于10的所有負(fù)整數(shù)，再把他們相加即可．

解答：解：∵絕對(duì)值大于5小于10的所有負(fù)整數(shù)為：-6，-7，-8，-9，
∴（-6）+（-7）+（-8）+（-9）=-6-7-8-9=-30．

點(diǎn)評(píng)：此題考查了絕對(duì)值的性質(zhì)及有理數(shù)的加法．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)值是是它的相反數(shù)；0的絕對(duì)值是0．