www.ylrr.net > 0.75*9+(8/9)+(3/4)*1+(1/9)u%

0.75*9+(8/9)+(3/4)*1+(1/9)u%

0.75*9+(8/9)+(3/4)*1+(1/9)-75%=0.75*9+(8/9)+0.75+(1/9)-0.75=0.75*(9+1-1)+(8/9+1/9)=0.75*9+1=7.75

7.5

简便计算0.75*8/9÷3/4=0.75÷3/4*8/9=1*8/9=8/9

0.75=四分之三,75%=四分之三,所以又公因数四分之三,原式=0.75*(九又九分之八+一又九分之一减去1)=0.75*(9+1-1+九分之八+九分之一)=0.75*10=7.5

0.75*8/9÷3/4=0.75÷3/4*8/9=1*8/9=8/9,等于9分之8 23-8/9*3/4÷1/27=23-8/9*3/4*27=23-18=5,这道题不能用简便算法 1/7+5/7÷5/6+5/12=1/7+5/7*6/5+5/12=1/7+6/7+5/12=1+5/12=1又5/12,等于1又12分之5 4/25*99+4/25=4/25*99+1=4/25*100=16

0.75*14又1/9+3/4*1又8/9-12*75%=0.75*(14又9分之1+1又9分之8-12)=0.75*4 =3

0.25除以9/8+0.75乘以8/9怎样简便计算?0.25÷9/8+0.75x8/9=0.25x8/9+0.75x8/9=(0.25+0.75)x8/9=1x8/9=8/9

0.75*14又9分之1+4分之3*1又9分之8-12*75%=0.75*14又9分之1+0.75*1又9分之8-12*0.75=0.75*(14又9分之1+1又9分之8-12)=0.75*4=3

90.75+90.25=9(0.75+0.25)=91=9

=3/4+127/9+3/4*17/9-9=3/4(1+17/9)+127/9-9=(3/4*26/9+127/9-9)*18/18=(13/6+127/9-9)*18/18=(39+254-81)/18=106/9

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