9999×7778+3333×6666怎么简算啊5.6×69.32+138.64×0.05+693.2×0.43又怎样简算啊

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9999×7778+3333×6666怎么简算啊5.6×69.32+138.64×0.05+693.2×0.43又怎样简算啊9999×7778+3333×6666怎么简算啊5.6×69.32+138.

9999×7778+3333×6666怎么简算啊5.6×69.32+138.64×0.05+693.2×0.43又怎样简算啊
9999×7778+3333×6666怎么简算啊
5.6×69.32+138.64×0.05+693.2×0.43又怎样简算啊

9999×7778+3333×6666怎么简算啊5.6×69.32+138.64×0.05+693.2×0.43又怎样简算啊
把3333*6666写成9999*2222计算得9999*(7778+2222)即9999*10000