www.5129.net > 47x48 51 47 47的简便计算

47x48 51 47 47的简便计算

简便计算过程方法如下解:47*47+53*47=(47+53)*47=100*47=4700

=47x(54+47-1)=47x100=4700

53x47+47x46+47=(53+46+1)x47=100x47=4700

47*28+71*47+47=47*(28+71+1)=47*100=4700

原式=47x52+47x56-47x8=47x(52+56-8)=47x(108-8)=47x100=4700 供参考.

47x28十71x47十47=47*(28+71+1)=47*100=4700

47*51=(165349-2)回*(答49+2)=49*49-4=(50-1)*(50-1)-4=2500-100+1-4=239747*49=(48-1)*(48+1)=48*48-1=(50-2)*(50-2)-1=2500-200+4-1=2303

原式=47*(52+1+47) =47*100 =4700

47x99+47用简便算式计算47x99+47=47x99+47*1=47*(99+1)=47*100=4700

解: 47x28+71x47+47 =47x(28+71+1) =47x100 =4700 完成!!!!!

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