巧算:999×222+333×334巧算:999×222+333×334 需脱式计算
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巧算:999×222+333×334巧算:999×222+333×334需脱式计算巧算:999×222+333×334巧算:999×222+333×334需脱式计算巧算:999×222+333×334
巧算:999×222+333×334巧算:999×222+333×334 需脱式计算
巧算:999×222+333×334
巧算:
999×222+333×334 需脱式计算
巧算:999×222+333×334巧算:999×222+333×334 需脱式计算
999×222+333×334
=333×3×222+333×334
=333×(666+334)
=333×1000
=333000
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999x222+333x334
=333×666+333×334
=333×(666+334)
=333×1000
=333000
祝楼主学习进步
999×222+333×334
=(333×3)×222+333×334
=333×(3×222)+333×334
=333×666+333×334
=333×(666+334)
=333×1000
=333000
巧算:999×222×333×334
巧算:999×222+333×334巧算:999×222+333×334 需脱式计算
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