123+234+345+543+432+321怎样简便
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123+234+345+543+432+321怎样简便123+234+345+543+432+321怎样简便123+234+345+543+432+321怎样简便123+234+345+543+432
123+234+345+543+432+321怎样简便
123+234+345+543+432+321怎样简便
123+234+345+543+432+321怎样简便
123+234+345+543+432+321=(123+543)+(234+432)+(345+321)=666
×3=1998
123+234+345+543+432+321
=123+321+234+432+345+543
=444+555+888
=111(4+5+8)
=111*17
=1887
123+321+234+432+345+543+...+789+987
123+234+345+543+432+321怎样简便
(123分之321+234分之345+543分之432)*(234分之345+543分之432+321分之123)-(123分之321+234分之345+543分之432+321分之123)*(234分之345+543分之432)
简便计算:123+321+234+432+345+543+……+789+987
简便计算并说一下原因,(123分之321+234分之345+543分之432)×(234分之345+543分之432+321分之123)-(123分之321+234分之345+543分之432+321分之123)×(234分之345+543分之432)简便计算
简便计算,请老师解答,123分之321+234分之345+543分之432)×(234分之345+543分之432+321分之123)-(123分之321+234分之345+543分之432+321分之123)×(234分之345+543分之432)简便计算
123+234+345+456=?
123*234*345*456=
123^2+234^2+345^2+2*123*234-2*123*345-2*234*345
789+987-(123+321)+543+345 ?
(321*321-123*123)/(543*543-345*345)要详细过程
123+234+345+456+567+678=?
123+234+345+456+567+678
123+234+345+456+567=
123+234+345+456+567=?
123+234+345+456+567+678速算
543平方-345平方分之321平方-123平方
(1+123+234)×(123+234+345)-(1+123+234+345)×(123+234)