0.45×0.45+0.45×0.55简便计算
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0.45×0.45+0.45×0.55简便计算0.45×0.45+0.45×0.55简便计算0.45×0.45+0.45×0.55简便计算0.45×0.45+0.45×0.55=0.45(0.45+0
0.45×0.45+0.45×0.55简便计算
0.45×0.45+0.45×0.55简便计算
0.45×0.45+0.45×0.55简便计算
0.45×0.45+0.45×0.55=0.45(0.45+0.55)=0.45
0.45*(0.45+0.55)=0.45*1=0.45
(0.45+0.55)x0.45
=1x0.45
=0.45
0.45*0.45+0.45*0.55
=0.45*(0.45+0.55)
=0.45*1
=0.45
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