青島版四年級數(shù)學上冊《除數(shù)是小數(shù)的小數(shù)除法》小數(shù)除法PPT課件,共20頁。
探究新知
閘門的高是我家門高的多少倍?
38.5÷2.2=17.5
38.5米 = 385分米
2.2米 = 22分米
385÷22 = 17.5
都是將除數(shù)是小數(shù)的除法轉化為除數(shù)是整數(shù)的除法。
課堂小結
除數(shù)是小數(shù)的除法,先移動除數(shù)的小數(shù)點,使它變成整數(shù);除數(shù)的小數(shù)點向右移動幾位,被除數(shù)的小數(shù)點也向右移動幾位,然后按照除數(shù)是整數(shù)的小數(shù)除法進行計算。位數(shù)不夠的,在被除數(shù)的末尾用“0”補足。
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