自主练习,(选自教材,P3-P4,),43,12,9,9,0,74,28,16,16,0,74,35,20,20,0,46,36,54,54,0,62,36,12,12,0,31,21,7,7,0,66,48,48,48,0,97,45,35,35,0,小文:,2673=89,(下),小宁:,1942=87,(下),89,87,小文跳的快,=58,=63,=219,=84,=54,=116,=91,4,=23,1,1044=26,(倍),答:寒冷地区的幼虫变成蝴蝶的时间是在热带地区的,26,倍。,40,40,100,0,11,31,43,10,2,70,71,2,40,41,2,50,49,2,50,51,(,1,),200+286=486,(米),(,2,),4869=54,(米),答:平均每分钟至少要走,54,米。,小亮:,1623=54,(周),小玲:,1626=27,(周),答:小亮,54,周。小玲,27,周。,2667=38,(页),15,30,45,60,75,发现:除数不变,被除数越大,商越大,1446=24,(人),1448=18,(箱),(,1,),1928=24,(,2,),6447=92,(人),6448=5152,(元),