脱式计算 1800-1350÷18×6 17.64÷[(2.3+0.5)×0.6] 3/5÷[(3/4-2/3)÷5/6].
问题描述:
脱式计算
1800-1350÷18×6
17.64÷[(2.3+0.5)×0.6]
÷[(3 5
-3 4
)÷2 3
]. 5 6
答
(1)1800-1350÷18×6
=1800-75×6
=1800-450
=1350;
(2)17.64÷[(2.3+0.5)×0.6]
=17.64÷[2.8×0.6]
=17.64÷1.68
=10.5;
(3)
÷[(3 5
-3 4
)÷2 3
]5 6
=
÷[3 5
×1 12
]6 5
=
×103 5
=6.