人教版五年级数学上册《小数除法的简便计算》PPT课件.ppt
1、口算:,0.8×0.5= 1.60.38= 10.75= 0.48÷0.03= 6÷1.2= 4×2.5= 0.56÷14= 0.92÷0.4=,630÷45÷2 280÷35 0.56÷14,2、这三道题有没有更简便的方法,0.4,1.98,0.25,5,10,0.04,2.3,16,=7,=8,=0.04,5.6÷35,5.6÷35,0.8÷5,0.16,9.3÷0.5÷0.6,你认为哪种方法更简便?,用简便方法计算: 5.4÷4.8 7.2÷4.5 72÷4.8 0.42÷3.5 0.25÷4÷0.25 8.4÷1.25÷0.8 10.4÷0.25÷2,在括号里填上适当的数:,