小学数学三年级下册《除数是一位数的除法》课件》.ppt

开始,80÷2,450÷5,360÷6,184÷4,307÷3,564÷8,金鹏超市,永辉超市,80元2箱,450元5箱,360元6箱,184元4箱,307元3箱,564元8箱,80÷2,450÷5,360÷6,307÷3,564÷8,=40(元),=60(元),金鹏超市,永辉超市,80元2箱,450元5箱,360元6箱,184元4箱,307元3箱,564元8箱,70（元）,=90(元）,184÷4,100（元）,40（元）,50（元）,80÷2,450÷5,360÷6,307÷3,564÷8,=40(元),=60(元),金鹏超市,永辉超市,80元2箱,450元5箱,360元6箱,184元4箱,307元3箱,564元8箱,70(元),=90(元),184÷4,100(元),40(元),50(元),184÷4,307÷3,564÷8,=46(元),=102(元)1(元),=70 (元)4(元),80÷2,450÷5,360÷6,184÷4,307÷3,564÷8,金鹏超市,永辉超市,80元2箱,450元5箱,360元6箱,184元4箱,307元3箱,564元8箱,估算：307÷3100,想： 300÷3=100,300÷3=100 0÷3=0 7÷3=21,80÷2,450÷5,360÷6,184÷4,307÷3,564÷8,金鹏超市,永辉超市,80元2箱,450元5箱,360元6箱,184元4箱,307元3箱,564元8箱,8,8,725,72,5,9,349,6,30,49,42,7,5,428,4,4,28,28,0,1,0,7,0,0,7,48,1,1、火眼金睛辨对错,一位不够看两位， 除到哪位商哪位，,余数要比除数小，,不够商“1”,“0”占位。,2、认真细心看谁棒,（1）624÷6=,（2）283÷4=,把第二题验算,智慧大挑战：,÷ 3,6,要使商末尾有0， 里可填几。,要使商中间有0， 被除数可能是多少?,02,÷3,要使商中间有0， 里可填几。,÷ 4,4 8,03,3,