絕對(duì)值經(jīng)典練習(xí)題1

1、1絕對(duì)值專項(xiàng)訓(xùn)練一、基礎(chǔ)平臺(tái)1；；；______7.3??______0?______3.3???______75.0???2；；______31??______45???______32???3；；______510????______36????______5.55.6????4______的相反數(shù)是它本身，_____的絕對(duì)值是它本身，_______的絕對(duì)值是它的相反數(shù)5一個(gè)數(shù)的絕對(duì)值是，那么這個(gè)數(shù)為______326當(dāng)時(shí)，；當(dāng)時(shí)，

2、aa??0______a0?a______?a7絕對(duì)值等于4的數(shù)是______8絕對(duì)值等于其相反數(shù)的數(shù)一定是（）A負(fù)數(shù)B正數(shù)C負(fù)數(shù)或零D正數(shù)或零二、自主檢測(cè)1；；；______5??______312??______31.2??______???2的絕對(duì)值是______；絕對(duì)值等于的數(shù)是______，它們互為523?523________3在數(shù)軸上，絕對(duì)值為4，且在原點(diǎn)左邊的點(diǎn)表示的有理數(shù)為________4如果，則，3??a_____

3、_??a______?a5下列說法中正確的是………………………………………………………………（）A一定是負(fù)數(shù)B只有兩個(gè)數(shù)相等時(shí)它們的絕對(duì)值才相a?等C若則與互為相反數(shù)D若一個(gè)數(shù)小于它的絕對(duì)值，則這ba?ab個(gè)數(shù)是負(fù)數(shù)3三、拓展平臺(tái)1，則；，則7?x______?x7??x______?x2如果，則，3?a______3??a______3??a3絕對(duì)值不大于11.1的整數(shù)有……………………………………………………（）A11個(gè)B12個(gè)C2