45×98的简便计算
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45×98的简便计算45×98的简便计算45×98的简便计算=45*(100-2)=45*100-45*2=4500-90=441045*100-45*2=441045×98=45*(100-2)=4
45×98的简便计算
45×98的简便计算
45×98的简便计算
=45 * (100-2)
=45*100 - 45*2
=4500-90
=4410
45*100-45*2=4410
45×98=45*(100-2)=4500-90=4410