问题 解答题
脱式计算:
10÷
5
9
-
1
6
×4
9
10
÷(3.5-3.2×
5
8

4
5
÷[1÷(
5
8
-
1
4
)]

9
10
×[1.4÷(
2
5
+
3
10
)].
答案

(1)10÷

5
9
-
1
6
×4,

=18-

2
3

=17

1
3

(2)

9
10
÷(3.5-3.2×
5
8
),

=

9
10
÷(3.5-2),

=

9
10
÷1.5,

=

3
5

(3)

4
5
÷[1÷(
5
8
-
1
4
)]

=

4
5
÷[1÷
3
8
]

=

4
5
÷
8
3

=

3
10

(4)

9
10
×[1.4÷(
2
5
+
3
10
)],

=

9
10
×[1.4÷
7
10
)],

=

9
10
×2,

=

9
5

单项选择题 A1/A2型题
填空题