怎么算999*778+333*666急

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怎么算999*778+333*666急
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怎么算999*778+333*666急
怎么算999*778+333*666

怎么算999*778+333*666急
999×778+333×666
=999×778+333×3×222
=999×778+999×222
=999×(778+222)
=999×1000
=999000

999*778+333*666=999*778+999*222=999*(778+222)=999*1000=999000