Question

333X42十9x666的简便运算怎么做？

Answer 1

333X42十9x666
=333x42+9x2x333
=333x（42+18）
=333x60
=19980

Answer 2

原式
＝333×42+18×333
＝333×(42+18)
＝333×60
=19980

Answer 3

拿出共同因子333️️️️️️️️️️️️️️️*(42+9*2)=333*(42+18)=333*60=19980

Answer 4

333×42+9×666
=111×3×42+9×6×111
=111×(126+54)
=111×180
=111×(200-20)
=22200-2220
=19980

Answer 5

333*42+9*666
=666*21+9*666
=666*(21+9)
=666*30
=999*20
=(1000-1)*20
=20000-20
=19980