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1993x1994%1/1993+1992x1994简便计算

下面=(1992+1)*1994-1=1992*1994+1993 所以=1

原式 =1992x1994x10001-1994x1993x10001 =(1992-1993)x(1994x10001) =(-1)x1994x10001 =(-1994)x10001 =-19941994

(1993x1994-1)/(1993+1992x1994) =(1993x1994-1)/[1993+(1993-1)x(1993+1)] =(1993x1994-1)/[1993+1993^2-1] =(1993x1994-1)/[1993x(1+1993)-1] =(1993x1994-1)/[1993x1994-1] =1

1994×19931993 - 1992×19941994 = 1994×1993×10001 - 1992×1994×10001 = 1994×10001×(1993 - 1992) = 1994×10001 = 19941994

= 1994×1993×10001 - 1992×1994×10001 = 1994×10001×(1993 - 1992) = 1994×10001 = 19941994

解:原式=(1993*1994-1)/(1993+1992*1994) =【1994*(1992+1)-1】/(1994*1992+1993) =(1994*1992+1993)/(1994*1992+1993) =1

最重要是知道因为 19941994=1994X10001 所以1993x19941994+1994x19931993=1993*1994*10001+1994*1993*10001 =1993*1994*2*10001=79488788084 希望对你有所帮助

原式=(1994+1/1992)x1992/1993 =1994x1992/1993+1/1992x1992/1993 =(1993+1)x1992/1993+1/1993 =1993x1992/1993+1x1992/1993+1/1993 =1992+1992/1993+1/1993 =1992+1 =1993

原式=1994×(19930000+1994) -1993×(19940000+1994) =1994×19930000+1994-1993×19940000-1993×1994 =1994×1993×10000+1994-1993×1994×10000-(1994-1)×1994 =1994-1994+1994 =1994

(12.8+12.8+12.8+12.8)x12.5 =4x12.8x12.5 =4x12.5x12.8 =5x12.8 =64 1994x199319931993-1993x199419941994 =1994x1993x100010001-1993x1994x100010001 =0

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