问题 解答题
能简算简算
2
3
+4÷
1
3

4
5
-
4
5
÷4
7
18
×
1
4
+
3
4
÷
18
7

12
7
÷(
2
3
-
1
4
答案

(1)6÷

2
3
+4÷
1
3

=9+12,

=21;

(2)4÷

4
5
-
4
5
÷4,

=5-

1
5

=4

4
5

(3)

7
18
×
1
4
+
3
4
÷
18
7

=

7
18
×
1
4
+
3
4
×
7
18

=

7
18
×(
1
4
+
3
4
),

=

7
18
×1,

=

7
18

(4)

12
7
÷(
2
3
-
1
4
),

=

12
7
÷
5
12

=4

4
35

单项选择题
单项选择题