除数是小数2课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,算一算，比一比,3.60.2 =18,3.60.02=180,0.36 6 =0.06,0.360.06=6,4.8 0.6=8,0.048,0.6=0.08,7.2 0.9=8,72,0.9=80,37,370,3700,4.2,42,420,计算除数是小数的除法，先移动除数的小数点，使它变成整数；除数的小数点向右移动几位，被除数的小数点也向右移动几位,(,如果被除数的位数不够,用,0,补足,),，然后按照除数是整数的除法法则进行计算。,计算方法,0,0.,0 0.,6.10.05=1.80.24=0.5613.4=,列竖式计算,:,书,P96,第,2,题第一行,作业：,书,P96,第,2,题第二行，第,3,题,0.72 =,12,1.2,0.12,0.06,0.6,6,2.4,0.24,0.024,4.8=,0.5,0.05,0.005,被除数不变,除数越小,商就越大,.,除数不变,被除数越小,商也就越小,.,