巧算9999*5556+6666*6666

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巧算9999*5556+6666*6666
巧算9999*5556+6666*6666

巧算9999*5556+6666*6666
9999*5556+6666*6666
=9999*(5555+1)+36*1111^2
=9999*5555+9999+36*1111^2
=45*1111^2+9999+36*1111^2
=(45+36)*1111^2+9999
=81*1111^2+9*1111
=(9*1111)^2+9*1111
=9*1111*(9999+1)
=9999*10000
=99990000.

9999*5556+6666*6666
=9999*5556+4444*9999
=9999*(5556+4444)
=9999*10000
=99990000

9999*5556+6666*6666
=9999*5556+3333*2*3*2222
=9999*5556+4444*9999
=9999*(5556+4444)
=9999*10000
=99990000

9999*5556+6666*6666
=1111*9*5556+1111*6*6666
=1111*(9*5555+9+6*6*1111)
=1111*(45*1111+36*1111+9)
=1111*(81*1111+9)
=1111*(9*9999+9)
=1111*9*(9999+1)
=99990000

巧算9999*5556+6666*6666 9999*5556+6666*6666如何巧算 9999×5556＋6666×6666的简便算法 9999×7778+3333×6666 巧算. 9999乘以2222加上6666乘以666=? 6666*6666 巧算 巧算 9999*9999*9999 6666×6666÷9999 9999*6666+9999*3333 9999/666+9999 66*666+6666*66666 巧算 6666乘以4444 666*888/999巧算 9999*7778+3333*6666 9999*7778+3333*6666 3333*6666+9999*7778 9999*2222+3333*6666 简算：9999*4444/6666