9999*8889+3333*3333简便计算

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9999*8889+3333*3333
简便计算

9999*8889+3333*3333
=9999*8889+3333*3*1111
=9999*8889+9999*1111
=9999*(8889+1111)
=9999*10000
=99990000

9999*8889+3333*3333
=9999*8889+3333*3*1111
=9999*8889+9999*1111
=9999*(8889+1111)
=9999*10000
=99990000

88881111+11108889=99990000

原式=1111*9*(1111*8+1)+1111²*9
=1111²*72+1111*9+1111*1111*9
=1111*9*(1111*8+1+1111)
=1111*9*10000

=99990000