1五上數(shù)學(xué)期末計(jì)算訓(xùn)練8天計(jì)算打卡一,基礎(chǔ)計(jì)算知識(shí)1,計(jì)算時(shí),應(yīng)先算的積是,再?gòu)挠疫厰?shù)位,點(diǎn)上小數(shù)點(diǎn)2,的積是位小數(shù),如果把因數(shù)擴(kuò)大到原來的倍,要使積不變,另一個(gè)因數(shù)應(yīng)該3,在計(jì)算小數(shù)除法時(shí),先移動(dòng)的小數(shù)點(diǎn),使它變成整數(shù),的小數(shù)點(diǎn)也向右移動(dòng)