问题 解答题
(1)14
3
17
-6.46-3.54=
(2)4.2÷1.5-1.5×0.6=(3)(4
5
6
-3
3
4
)÷(
3
14
+
2
7
)=
(4)51.6÷[(3
2
5
-1.25)×
4
5
]=
(5)(0.92+
2
25
)÷(4-2
7
9
)=
(6)(5
2
5
-1.8)÷[(1.15+
13
20
)×1
2
3
]=
答案

(1)14

3
17
-6.46-3.54,

=14

3
17
-(6.46-3.54),

=14

3
17
-10,

=4

3
17

(2)4.2÷1.5-1.5×0.6,

=2.8-0.9,

=1.9;

(3)(4

5
6
-3
3
4
)÷(
3
14
+
2
7
),

=

13
12
÷
1
2

=

13
6

(4)51.6÷[(3

2
5
-1.25)×
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+

2
25
)÷(4-2
7
9
),

=(

23
25
+
2
25
)÷(
36
9
-
25
9
),

=1÷

11
9

=

9
11

(6)(5

2
5
-1.8)÷[(1.15+
13
20
)×1
2
3
],

=(5

2
5
-1
4
5
)÷[(1
3
20
+
13
20
)×1
2
3
],

=3

3
5
÷[1
4
5
×1
2
3
],

=3

3
5
÷[
9
5
×
5
3
],

=

18
5
÷3,

=

6
5

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