微課課件除數(shù)是小數(shù)的除法

除數(shù)是小數(shù)的除法除數(shù)是小數(shù)的除法雞蛋4.2元/千克猴媽媽買雞蛋用去7.98元我買了多少千克雞蛋？總價(jià)÷單價(jià)=數(shù)量7.98÷4.2=雞蛋猴媽媽買雞蛋用去7.98元我買了多少千克雞蛋？總價(jià)÷單7.98÷4.2小數(shù)→整數(shù)怎樣轉(zhuǎn)化？7.98÷4.2小數(shù)→整數(shù)怎樣轉(zhuǎn)化？小數(shù)→整數(shù)怎樣轉(zhuǎn)化？7.98÷4.2=79.8÷42798÷420798÷427.98÷4.2×10×107.98÷4.2×100×1007.98÷4.2×100×10商不變規(guī)律小數(shù)→整數(shù)怎樣轉(zhuǎn)化？7.98÷4.2=79.8÷42798÷79.8÷42=1.97.98÷4.2=798÷420=1.91.42378937801.4203780937800簡便79.8÷42=1.97.98÷4.2=798÷420=1.79.8÷427.98÷4.2=×10×1079.8÷427.98÷4.2=×10×10．除數(shù)的小數(shù)點(diǎn)是怎么動(dòng)的？被除數(shù)的小數(shù)點(diǎn)又是怎么動(dòng)的？．除數(shù)的小數(shù)點(diǎn)是怎么動(dòng)的？被除數(shù)的小數(shù)點(diǎn)又是怎么動(dòng)的？1.42378937807.98÷4.2=...1.9（千克）42×1937842798...驗(yàn)算：答：猴媽媽買了1.9千克雞蛋。1.42378937807.98÷4.2=...1.9（千克．．．．．．．6.94263630．0.427236360．0.351682802800．6.94263630．0.427236360．0.3510.12÷0.3=（）÷30.12÷0.03=（）÷36.72÷0.28=（）÷280.672÷0.28=（）÷28×10×101.21267.267.20.12÷0.3=（）÷30.12÷0.03=（微課課件除數(shù)是小數(shù)的除法﹒﹒商變了！﹒﹒商變了！除數(shù)是小數(shù)的除法是如何轉(zhuǎn)化的呢？再見除數(shù)是小數(shù)的除法是如何轉(zhuǎn)化的呢？再見除數(shù)是小數(shù)的除法除數(shù)是小數(shù)的除法雞蛋4.2元/千克猴媽媽買雞蛋用去7.98元我買了多少千克雞蛋？總價(jià)÷單價(jià)=數(shù)量7.98÷4.2=雞蛋猴媽媽買雞蛋用去7.98元我買了多少千克雞蛋？總價(jià)÷單7.98÷4.2小數(shù)→整數(shù)怎樣轉(zhuǎn)化？7.98÷4.2小數(shù)→整數(shù)怎樣轉(zhuǎn)化？小數(shù)→整數(shù)怎樣轉(zhuǎn)化？7.98÷4.2=79.8÷42798÷420798÷427.98÷4.2×10×107.98÷4.2×100×1007.98÷4.2×100×10商不變規(guī)律小數(shù)→整數(shù)怎樣轉(zhuǎn)化？7.98÷4.2=79.8÷42798÷79.8÷42=1.97.98÷4.2=798÷420=1.91.42378937801.4203780937800簡便79.8÷42=1.97.98÷4.2=798÷420=1.79.8÷427.98÷4.2=×10×1079.8÷427.98÷4.2=×10×10．除數(shù)的小數(shù)點(diǎn)是怎么動(dòng)的？被除數(shù)的小數(shù)點(diǎn)又是怎么動(dòng)的？．除數(shù)的小數(shù)點(diǎn)是怎么動(dòng)的？被除數(shù)的小數(shù)點(diǎn)又是怎么動(dòng)的？1.42378937807.98÷4.2=...1.9（千克）42×1937842798...驗(yàn)算：答：猴媽媽買了1.9千克雞蛋。1.42378937807.98÷4.2=...1.9（千克．．．．．．．6.94263630．0.427236360．0.351682802800．6.94263630．0.427236360．0.3510.12÷0.3=（）÷30.12÷0.03=（）÷36.72÷0.28=（）÷280.672÷0.28=（）÷28×10×101.21267.267.2