Question

-的倒數(shù)的相反數(shù)是________，絕對(duì)值小于4的整數(shù)共有________個(gè)．

Answer 1

2    7
分析：乘積是1的兩個(gè)數(shù)互為倒數(shù)，負(fù)數(shù)的相反數(shù)是正數(shù)，一個(gè)數(shù)的絕對(duì)值就是這個(gè)數(shù)在數(shù)軸上與原點(diǎn)的距離．根據(jù)上述概念進(jìn)行計(jì)算．
解答：-的倒數(shù)的相反數(shù)是2，
絕對(duì)值小于4的整數(shù)共有±3，±2，±1，0共7個(gè)．
故答案是2；7．
點(diǎn)評(píng)：本題考查了倒數(shù)、相反數(shù)、絕對(duì)值的概念．解題的關(guān)鍵是熟練掌握倒數(shù)、相反數(shù)、絕對(duì)值的概念，并能區(qū)分這些概念．