【導(dǎo)讀】_____,一個(gè)負(fù)數(shù)的絕對(duì)值是_____,____的絕對(duì)值是0.3個(gè)單位的點(diǎn)表示的數(shù)是_________.的負(fù)整數(shù)是_______,最小的正整數(shù)是_______,絕對(duì)值最小的數(shù)是______.2021,并且表示這個(gè)數(shù)的點(diǎn)在原點(diǎn)的左側(cè),則這個(gè)數(shù)為______.8絕對(duì)值小于3的整數(shù)為______,絕對(duì)值大于_________.時(shí),則x一定是().a=b,則a與b的關(guān)系是().正數(shù)記超過規(guī)定質(zhì)量的數(shù),用負(fù)數(shù)記不足規(guī)定質(zhì)量的數(shù)).指出哪個(gè)足球的質(zhì)量好些,并用絕對(duì)值的知識(shí)進(jìn)行說明.a、b互為相反數(shù),c、d互為倒數(shù),x的絕對(duì)值是1,求xba?