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333乘以888÷999的巧算是怎么样?

=888×333÷999 =888÷(999÷333) =888÷3 =8×37×3÷3 =8×37 =296

333x1000=333000-333 =332667

2019÷999 =(1998+21)÷999 =1998÷999+21÷999 =2+21/999 =2又21/999

999×778+666×333 =999×778+222×3×333 =999×778+222×999 =999×(778+222) =999×1000 =999000

777/999=111×7/111×9=7/9

666*888/999 =2*333*888/(3*333) =2*296*3/3 =2*296 =592

先算888*1000,再减去888,这样会容易一点……O(∩_∩)O~

999×778十666×333 =999×778十222×3×333 =999×778+222×999 =999×(778+222) =999×1000 =999000

= 333*3*2.22+999*7.78 =999*(2.22+7.78) =999*1 =999 只能这样了。

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