小学数学人教版三年级数学下册《口算除法》PPT课件（1）维语.ppt

3- , ,84 = 355 = 93 = 402=246= 5006 =,2,3,4,7,80,3000,80 ( ) .400 ( ) .,240 ( ) .3600 ( ) .,24,36, ., ., ., , .,124,600,60,60, , , , ,360 : 60 60 ,603=,20, ： 6 3=2 =20,还, , 3600 , 36000,60 3=20 600 3=200 6000 3=2000 0 ,2,40,400,4000, , 3240,240 24 . 24 3 =8 =8080 3=240240 3=80,36004= 3600 36 100 36 4=9 =900 900 4=36003600 4=900 4200 6= 1800 9= 3500 5= 5400 9=, 303= 402=804= 9003=4806= 6002=2404= 5005=60003= 48006=49007= 5600 7=,10,20,80,30,2000,70,20,300,40,100,400,11, 900331 202=10 80004200 7007100,80 2 900 3 ,802=40,9003=300, 6 60 ,606=10: 10 ,3- . 39 41. 4 ,39+41=80（）,804=20（ ）,: 20 ., 38 18 2 ,38-18=20（）,202=10（）,: 10 .,