100–1+1000–1+10000–1+(100000–1)×4
99+999+9999+99999×4简便计算(要有过程)
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相关问题
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9×9=99×99=999×999=9999×9999=99999×99999=我能直接想出:999999999×999
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9+99+999+9999+99999=?怎样计算比较简便?请你写出主要过程.
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9+99+999+9999+99999=?怎样计算比较简便?请你写出主要过程.
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简便计算; 1.9+1.99+1.999+1.9999+1.99999 28*1111+9999*8
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99+999+9999+99999=
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9+99+999+9999+9999+99999=?
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99+9+999+9999+4简便计算
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9+99+999+9999+99999=?
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9+99+999+9999+99999 = =
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9999+999+99+9+4怎样简便计算