怎样简便计算?动动脑经,想一想
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怎样简便计算?动动脑经,想一想
(1.45×1/8×360÷29/4)÷ [35×(1/7+1/5)÷4/5 ]
各位大仙帮帮忙!
急
(1.45×1/8×360÷29/4)÷ [35×(1/7+1/5)÷4/5 ]
各位大仙帮帮忙!
急
![怎样简便计算?动动脑经,想一想](/uploads/image/z/8627762-2-2.jpg?t=%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%3F%E5%8A%A8%E5%8A%A8%E8%84%91%E7%BB%8F%2C%E6%83%B3%E4%B8%80%E6%83%B3)
(1.45×1/8×360÷29/4)÷ [35×(1/7+1/5)÷4/5 ]
=【(1.45×4/29)×(1/8×360)】÷ [(35×1/7+35×1/5)÷4/5 ]
=(0.2×45)÷ [(5+7)÷4/5 ]
=9÷[12÷4/5]
=9÷15
=3/5
=【(1.45×4/29)×(1/8×360)】÷ [(35×1/7+35×1/5)÷4/5 ]
=(0.2×45)÷ [(5+7)÷4/5 ]
=9÷[12÷4/5]
=9÷15
=3/5