Question

（2012•岳陽）計(jì)算：|-2|=    ．

Answer 1

【答案】分析：根據(jù)絕對(duì)值定義去掉這個(gè)絕對(duì)值的符號(hào)．
解答：解：∵-2＜0，
∴|-2|=2．
點(diǎn)評(píng)：解題關(guān)鍵是掌握絕對(duì)值的規(guī)律．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．