问题 解答题
计算下面各题
24×(
3
8
+
3
4
)
(
4
5
-
1
2
×
4
5
2
3
(
2
51
+
5
18
)×9×17
3
16
÷
9
10
×
4
5
3-1÷(
5
7
+
6
7
×
1
3
)
1.75×
6
7
+
3
14
×
7
4
+
7
4
答案

①24×(

3
8
+
3
4
),

=24×

3
8
+24×
3
4

=9+18,

=27;

②(

4
5
-
1
2
×
4
5
)÷
2
3

=(

4
5
-
2
5
)÷
2
3

=

2
5
×
3
2

=

3
5

③(

2
51
+
5
18
)×9×17,

=

2
51
×9×17+
5
18
×9×17,

=6+

85
2

=

97
2

3
16
÷
9
10
×
4
5

=

3
16
×
10
9
×
4
5

=

1
6

⑤3-1÷(

5
7
+
6
7
×
1
3
),

=3-1÷1,

=2;

⑥1.75×

6
7
+
3
14
×
7
4
+
7
4

=

7
4
×
6
7
+
3
14
×
7
4
+
7
4

=

7
4
×(
6
7
+
3
14
+1),

=

7
4
×
29
14

=

29
8

填空题
单项选择题