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  • 脫式計(jì)算(能簡(jiǎn)便就簡(jiǎn)便)

    脫式計(jì)算(能簡(jiǎn)便就簡(jiǎn)便)
    6.25÷1%-1.25×25×8 5/3×81+60%×19 4/3×4÷4×4/3 13/7+12.5%×13/6 5/4×3.5+5.5×80%+0.8
    (27+19/18)÷9 81/5×3.6÷1又6/1
    數(shù)學(xué)人氣:121 ℃時(shí)間:2020-02-06 07:01:17
    優(yōu)質(zhì)解答
    6.25÷1%-1.25×25×8
    =625-(1.25×8)×25
    =625-10×25
    =625-250
    =375
    3/5×81+60%×19
    =0.6×(81+19)
    =0.6×100
    =60
    4/3×4÷4×4/3
    =4/3×4/3×(4÷4)
    =4/3×4/3
    =16/9
    13/7×12.5%+12.5%×13/6
    =(13/7+13/6)×12.5%
    =1×12.5%
    =0.125
    5/4×3.5+5.5×80%+0.8
    =0.8×(3.5+5.5+1)
    =0.8×10
    =8
    (27+19/18)÷9
    =27÷9+19/18÷9
    =3+19/2
    =3又19/2
    81/5×3.6÷1又6/1
    =9/2÷7/6
    =9/2×6/7
    =27/7
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