问题 解答题
1
8
×14÷
7
8
4
5
+
3
10
)÷
3
10
5
6
÷(
1
2
+
5
6
3
4
÷
15
16
÷
5
6
1
100
÷
1
100
4
4
5
×4
3
5
-4
4
5
×3.6
3
4
÷
7
8
÷
15
14
4
9
+
2
15
)÷
2
15
3
20
÷0.2×
2
3
答案

(1)

1
8
×14÷
7
8

=

1
8
÷
7
8
×14,

=

1
7
×14,

=2;

(2)(

4
5
+
3
10
)÷
3
10

=

11
10
÷
3
10

=

11
3

(3)

5
6
÷(
1
2
+
5
6
),

=

5
6
÷
4
3

=

5
8

(4)

3
4
÷
15
16
÷
5
6

=

4
5
÷
5
6

=

24
25

(5)1÷

1
100
÷
1
100

=100÷

1
100

=10000;

(6)4

4
5
×4
3
5
-4,

=22

2
25
-4,

=18

2
25

(7)

4
5
×3.6

=0.8×3.6,

=2.88;

(8)

3
4
÷
7
8
÷
15
14

=

6
7
÷
15
14

=

4
5

(9)(

4
9
+
2
15
)÷
2
15

=(

4
9
+
2
15
)×
15
2

=

4
9
×
15
2
+
2
15
×
15
2

=

10
3
+1,

=

13
3

(10)

3
20
÷0.2×
2
3

=

3
4
×
2
3

=

1
2

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