问题 解答题
计算下面各题.
4
9
×
15
16
÷
5
6
4
5
+
1
4
)÷
7
3
+
7
10
8
3
-0.60.75×18÷0.15.
答案

(1)

4
9
×
15
16
÷
5
6

=

4
9
×
15
16
×
6
5

=

1
2

(2)(

4
5
+
1
4
)÷
7
3
+
7
10

=(

16
20
+
5
20
÷
7
3
+
7
10

=

21
20
×
3
7
+
7
10

=

9
20
+
14
20

=

23
20

=1

3
20

(3)4÷

8
3
-0.6,

=4×

3
8
-0.6,

=1.5-0.6,

=0.9;

(4)0.75×18÷0.15,

=0.75÷0.15×18,

=5×18,

=90.

单项选择题
单项选择题