練習(xí)十二復(fù)習(xí)舊知課堂小結(jié)課后作業(yè)小數(shù)的初步認(rèn)識(shí)鞏固練習(xí)7復(fù)習(xí)舊知列豎式計(jì)算。1.80.20.40.950.31.80.210220.40.91311.350.3355.3先把小數(shù)點(diǎn)對(duì)齊,也就是相同數(shù)位對(duì)齊,再按照整數(shù)加法法則計(jì)算,得數(shù)的小數(shù)點(diǎn)要和加數(shù)的小數(shù)點(diǎn)對(duì)齊。先把小數(shù)點(diǎn)對(duì)齊,也就是相同數(shù)位對(duì)齊,再按照整數(shù)減法法則計(jì)
上傳時(shí)間:2021-04-21 |
頁數(shù):14 |
格式:PPTX |
瀏覽:57