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)識鞏固練習(xí)7復(fù)習(xí)舊知列豎式計算。1.80.20.40.950.31.80.210220.40.91311.350.3355.3先把小數(shù)點對齊,也就是相同數(shù)位對齊,再按照整數(shù)加法法則計算,得數(shù)的小數(shù)點要和加數(shù)的小數(shù)點對齊。先把小數(shù)點對齊,也就是相同數(shù)位對齊,再按照整數(shù)減法法則計
上傳時間:2021-04-21 |
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