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

(1)(4

5
6
-3
3
4
)÷(
3
14
+
2
7
),

=

13
12
÷
1
2

=

13
6

(2)51.6÷[(3

2
5
-1.25)×
4
5
],

=51.6÷[2.15×

4
5
],

=51.6÷1.72,

=30;

(3)(0.92+

2
25
)÷(4-2
7
9
),

=1÷

11
9

=

9
11

(4)(5

2
5
-1.8)÷[(1.15+
13
20
)×1
2
3
],

=3.6÷[1.8×

5
3
],

=3.6÷3,

=1.2.

判断题
单项选择题