-6 0 -
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分析:根據(jù)相反數(shù)的性質(zhì),互為相反數(shù)的兩個(gè)數(shù)和為0;倒數(shù)的性質(zhì),互為倒數(shù)的兩個(gè)數(shù)積為1;絕對(duì)值的定義,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.求解即可.
解答:a的相反數(shù)是-a,a的倒數(shù)是
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,a倒數(shù)的絕對(duì)值是|
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|,
所以:-(-6)=6的相反數(shù)是-6,0的絕對(duì)值是0,倒數(shù)為-3.5的數(shù)是-
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=-
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,-
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的倒數(shù)的絕對(duì)值是
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.
故答案分別為:-6,0,-
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,
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.
點(diǎn)評(píng):此題考查的知識(shí)點(diǎn)是絕對(duì)值、倒數(shù)及相反數(shù),關(guān)鍵注意掌握相反數(shù),倒數(shù),絕對(duì)值的定義. a的相反數(shù)是-a,a的倒數(shù)是 1a;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.