Question

7、符號(hào)是“-”號(hào)，絕對(duì)值是7的數(shù)是

-7

．

Answer 1

分析：根據(jù)互為相反數(shù)的兩個(gè)數(shù)的絕對(duì)值相等，可直接解答．

解答：解：∵|±7|=7，
∴符號(hào)是負(fù)號(hào)，絕對(duì)值等于7的數(shù)是-7．
故答案為：-7．

點(diǎn)評(píng)：本題考查了絕對(duì)值的知識(shí)，比較簡(jiǎn)單，解答此題的關(guān)鍵是熟知互為相反數(shù)的兩個(gè)數(shù)的絕對(duì)值相等．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．