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  • 計(jì)算各題.(能簡(jiǎn)算的要簡(jiǎn)算)

    計(jì)算各題.(能簡(jiǎn)算的要簡(jiǎn)算)
    5/6+1/6×25%+75%
    70%÷(1-3/5×125%)
    31/8×35%+0.35×6.125
    1/3×5×2/5÷1/3
    3/4-5/8×3/4
    14/25÷(1/5+1/2)
    數(shù)學(xué)人氣:795 ℃時(shí)間:2020-03-28 15:27:16
    優(yōu)質(zhì)解答
    (1)
    5/6+1/6×25%+75%
    =5/6+1/6×1/4+3/4
    =20/24+1/24+18/24
    =(20+1+18)/24
    =39/24
    =13/8
    (2)
    70%÷(1-3/5×125%)
    =0.7÷(1-3/5×5/4)
    =0.7÷(1-3/4)
    =0.7÷1/4
    =0.7×4
    =2.8
    (3)
    31/8×35%+0.35×6.125
    =3.875×0.35+0.35×6.125
    =0.35×(3.875+6.125)
    =0.35×10
    =3.5
    (4)1/3×5×2/5÷1/3
    =1/3÷1/3×5×2/5
    =5×2/5
    =2
    (5)
    3/4-5/8×3/4
    =3/4×(1-5/8)
    =3/4×3/8
    =9/32
    (6)
    14/25÷(1/5+1/2)
    =14/25÷(2/10+5/10)
    =14/25÷7/10
    =14/25×10/7
    =4/5
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