用简便方法计算:999*778+333*666

学习 时间:2026-05-30 00:11:47 阅读:3906
用简便方法计算:999*778+333*666

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动听的母鸡

勤恳的微笑

2026-05-30 00:11:47

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

最新回答共有2条回答

  • 饱满的便当
    回复
    2026-05-30 00:11:47

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

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