378 +57273
378 +574+ 73=300+500+(70+70+70)+(8+4+3)=800+210+15=1025
378+527+73简便计算如下378+527+73 =(378+527)+73 =900+73 =973
378 527 73 167 289 33的简便运算.=527+73+(167+33)+378+289=300+200+378+289=878+300-11=1167
378+27+73=378+(27+73)=378+100=478
简便计算过程方法如下解:378-27-73=378-(27+73)=378-100=278
378+517十73的简便运算解:378+517十73=378+(517十73)=378+590=378+600-10=978-10=968
378+52+73=378+22+30+73=400+103=503
98*73=(100-2)*73=100*73-2*73=7300-146=7154
378+527+73+22简便计算解:根据结合律的运用,原式=(378+22)+(527+73)=400+600=1000