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更多教學資源下載:http:/ 直接寫得數(shù)。直接寫得數(shù)。=31116124120直接寫得數(shù)。直接寫得數(shù)。=30532832= =? 量杯里有量杯里有 升果汁,茶杯的升果汁,茶杯的容量是容量是 升。這個量杯里的升。這個量杯里的果汁能倒?jié)M幾個茶杯?果汁能倒?jié)M幾個茶杯? 109103103109 分數(shù)除以分數(shù)也可以用被除數(shù)分數(shù)除以分數(shù)也可以用被除數(shù)乘除數(shù)的倒數(shù)來計算嗎?先試著算乘除數(shù)的倒數(shù)來計算嗎?先試著算一算,再在圖中分一分,看結(jié)果是一算,再在圖中分一分,看結(jié)果是否相同。否相同。( )( )= = = =(個)(個)答:能倒?jié)M答:能倒?jié)M 個茶杯。個茶杯。 升升10310910910931033分數(shù)分數(shù)除以除以整數(shù)整數(shù)等于等于分數(shù)分數(shù)乘乘整數(shù)的整數(shù)的倒數(shù)倒數(shù)。整數(shù)整數(shù)除以除以分數(shù)分數(shù)等于等于整數(shù)整數(shù)乘乘分數(shù)的分數(shù)的倒數(shù)倒數(shù)。聯(lián)系前面學習的分數(shù)除以整聯(lián)系前面學習的分數(shù)除以整數(shù)和整數(shù)除以分數(shù)的計算,你能數(shù)和整數(shù)除以分數(shù)的計算,你能說出分數(shù)除法的計算方法嗎?說出分數(shù)除法的計算方法嗎? 甲數(shù)除以乙數(shù)甲數(shù)除以乙數(shù)(0除外)除外),等于甲數(shù),等于甲數(shù)乘乙數(shù)的倒數(shù)。乘乙數(shù)的倒數(shù)。 分數(shù)除以整數(shù)等于分數(shù)乘整數(shù)的倒數(shù)。分數(shù)除以整數(shù)等于分數(shù)乘整數(shù)的倒數(shù)。整數(shù)除以分數(shù)等于整數(shù)乘分數(shù)的倒數(shù)。整數(shù)除以分數(shù)等于整數(shù)乘分數(shù)的倒數(shù)。本課小結(jié)理解并掌握分數(shù)除以分數(shù)的計算方法。