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0.26x5.5十2.6x0.45怎样简便计算?

解:0.26*5.5+2.6*0.45 =0.26*5.5+0.26*10*0.45 =0.26*5.5+0.26*4.5 =0.26(5.5+4.5) =0.26*10 =2.6

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