9+99+999+9999+99999=?
3个回答
9+99+999+9999+99999=10+100+1000+10000+100000-5=1111105
9999+999*999=9999+1000*999-999=999000
后面的看不太懂
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9+99+999+9999+9999+99999=?
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9+99+999+9999+99999+999999=______.
9+99+999+9999+99999+999999=______.
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9999999+999999+99999+9999+999+99+9=
9×9=99×99=999×999=9999×9999=99999×99999=我能直接想出:999999999×999
99+999+9999+99999=