问题 解答题
计算.
7
13
×
3
4
+
3
4
×
6
13
3
7
÷
7
11
+
4
7
÷
7
11
36×(
7
9
+
5
6
)÷
29
5
答案

(1)

7
13
×
3
4
+
3
4
×
6
13

=(

7
13
+
6
13
)×
3
4

=1×

3
4

=

3
4

(2)

3
7
÷
7
11
+
4
7
÷
7
11

=

3
7
×
11
7
+
4
7
×
11
7

=(

3
7
+
4
7
)×
11
7

=1×

11
7

=1

4
7

(3)36×(

7
9
+
5
6
)÷
29
5

=(36×

7
9
+36×
5
6
)÷
29
5

=(28+30)÷

29
5

=58÷

29
5

=10.

单项选择题
单项选择题