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  • 用簡便方法計算:100.01*2.7= 0.42*160+36*1.6-34*3.2= 32*0.25*12.5*0.2*5= 11*22+0.22*3300+330*4.4=

    用簡便方法計算:100.01*2.7= 0.42*160+36*1.6-34*3.2= 32*0.25*12.5*0.2*5= 11*22+0.22*3300+330*4.4=
    0.5*0.8*0.04*1.25*0.2*0.025= 0.92*54+0.46*92=
    數(shù)學人氣:181 ℃時間:2020-03-28 06:08:46
    優(yōu)質(zhì)解答
    100.01*2.7
    =100*2.7+0.01*2.7
    =270+0.027
    =270.027
    0.42*160+36*1.6-34*3.2
    = 42*1.6+36*1.6-68*1.6
    =(42+36-68)*1.6
    =10*1.6
    =16
    32*0.25*12.5*0.2*5
    = 4*0.25*8*12.5*0.2*5
    =1*100*1
    =100
    11*22+0.22*3300+330*4.4
    =11*22+22*33+66*22
    =22*(11+33+66)
    =22*110
    =2420
    0.5*0.8*0.04*1.25*0.2*0.025
    =0.5*0.2*0.8*1.25*0.04*0.025
    =0.1*1*0.001
    =0.0001
    0.92*54+0.46*92
    =0.92*54+46*0.92
    =0.92*(54+46)
    =0.92*100
    =92
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