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用简便方法计算999×999+1999

1999+999×999 =1000+999+999×999 =1000+999×(1+999) =1000+999×1000 =1000×(1+999) =1000×1000 =1000000

解:999×999+1999 =999×999+999+1000 =999×(999+1)+1000 =999×1000+1000 =1000×(999+1) =1000×1000 =1000000

=(1000-1)²+2000-1 =1000000-2×1000+1+2000-1 =1000000

解:根据拆分法和提取公因式的简便方法, 原式=999x999+999+1000 =999x(999+1)+1000 =999x1000+1000 =1000x(999+1) =1000x1000 =1000000

简便方法 999x999+1999 =999x999+999+1000 =999×(999+1)+1000 =999×1000+1000 =(999+1)×1000 =1000×1000 =1000000

解:如图

999+999+1999 =1000×2+2000-3 =4000-3 =3997 你好,本题已解答,如果满意 请点右上角“采纳答案”。

=999×999+999×1+1000 =999×1000+1000 =1000×1000 =1000000

=1999+998001=1000000

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