小数除以小数练习课课件

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,*,练习课,小数除以小数,口算,3.2,0.8,0.81,0.09,2,.4,1.2,=4,=9,=2,2.6,0.13,35,0.5,4.8,0.04,=20,=70,=120,口算,口算,=60,=80,=600,42,0.7,6.4,0.08,36,0.06,口算,=120,=70,=120,84,0.7,6.3,0.09,72,0.6,0,.6254,0,.31,化成除数是整数的除法,72,.9,0,.03,0,111.3,53= 10.81,0.47= 25.2,0.18=,竖式计算并验算,根据竖式，填空,4.2 1,0.32,1,3 2,1 0,1,3,9 6,5,4.210.32,=13( ),5,0.05,根据竖式，填空,1.2,0.125,0,1.20.125,=9( ),0,.075,0,9,1 1 2 5,7 5,试一试,1,、,46.42.3,的商是,20,，余数是,甲数除以乙数商是,91,余数是,6,若把甲数扩大,10,倍，乙数乘以,10,，商是 ，余数是 。,想一想,判断,计算除数是小数的除法时，只要把除数变成整数来计算，被除数不变就可以了,.,（ ）,在除法中，商一定小于被除数。（ ）,判断,被乘数缩小,10,倍，乘数扩大,10,倍，积不变。（ ）,被除数扩大,10,倍，除数缩小,10,倍，商不变。（ ）,自我检测,6,.877.3(,商是两位小数，写出余数,),铅笔每只售价,0.35,元，小东付,4,元，最多可以买几只？可找回多少元？,