三年级数学简便计算专项练习
-
简介
355+260+140+245 278+463+22+37 732+580+268 =(355+245)+(260+140) =(278+22)+(463+37) =(732+268)+580 =600+400 =300+500 =1000+580 =1000 =800 =1580 1034+780+320+102 425+14+186 749+5036+251 =(1034+102)+(780+120) =425+(14+186) =(749+251)+5036 =1136+900 =425+200 =1000+5036 =2036 =625 =6036
本年级热门下载
同类热门下载