问题
解答题
|
答案
(1)250×16-48048÷24,
=4000-2002,
=1998;
(2)18÷1.5-0.5×0.3,
=12-0.15,
=11.85;
(3)25×1.25×32,
=25×1.25×4×8,
=(25×4)×(1.25×8),
=100×10,
=1000;
(4)5.58-
+5.42-3 5
,2 5
=(5.58+5.42)-(
+3 5
),2 5
=11-1,
=10;
(5)(
+5 6
+7 12
)÷3 8
,1 48
=(
+5 6
+7 12
)×48,3 8
=
×48+5 6
×48+7 12
×48,3 8
=40+28+18,
=68+18,
=86;
(6)[1-(
+1 2
)×1 3
]÷1 5
,5 6
=[1-
×5 6
]÷1 5
,5 6
=[1-
]÷1 6
,5 6
=
÷5 6
,5 6
=1.