问题
解答题
|
答案
(1)14
-6.46-3.54,3 17
=14
-(6.46-3.54),3 17
=14
-10,3 17
=4
;3 17
(2)4.2÷1.5-1.5×0.6,
=2.8-0.9,
=1.9;
(3)(4
-35 6
)÷(3 4
+3 14
),2 7
=
÷13 12
,1 2
=
;13 6
(4)51.6÷[(3
-1.25)×2 5
],4 5
=51.6÷[(3.4-1.25)×0.8],
=51.6÷[3.4×0.8-1.25×0.8],
=51.6÷[2.72-1],
=51.6÷1.72,
=30;
(5)(0.92+
)÷(4-22 25
),7 9
=(
+23 25
)÷(2 25
-36 9
),25 9
=1÷
,11 9
=
;9 11
(6)(5
-1.8)÷[(1.15+2 5
)×113 20
],2 3
=(5
-12 5
)÷[(14 5
+3 20
)×113 20
],2 3
=3
÷[13 5
×14 5
],2 3
=3
÷[3 5
×9 5
],5 3
=
÷3,18 5
=
.6 5