9999×7778+3333×6666.
人气:488 ℃ 时间:2020-02-03 22:26:15
解答
9999×7778+3333×6666,
=9999×7778+3333×3×2222,
═9999×7778+9999×2222,
=9999×(7778+2222),
=9999×10000,
=99990000;
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