问题 解答题
计算下面各题,能简便的简便算.
15÷
5
9
+
1
6
×8
8
9
×
3
4
÷
8
15

8
17
÷23+
1
23
×
9
17

2
7
×
8
9
+
5
7
×
8
9
答案

(1)15÷

5
9
+
1
6
×8

=27+

4
3

=28

1
3

(2)

8
9
×
3
4
÷
8
15

=

2
3
÷
8
15

=1

1
4

(3)

8
17
÷23+
1
23
×
9
17

=

1
23
×(
8
17
+
9
17

=

1
23
×1

=

1
23

(4)

2
7
×
8
9
+
5
7
×
8
9

=(

2
7
+
5
7
)×
8
9

=1×

8
9

=

8
9

解答题
多项选择题