问题 解答题
计算下列各题,能简算的要简算.
6
5
×
6
7
-
6
7
÷5
4-
9
15
÷
9
5
-
2
3
2
3
-
5
6
×
3
10
+
3
2
7
4
÷(
2
3
+
1
2
)×
4
5
答案

(1)

6
5
×
6
7
-
6
7
÷5,

=

6
5
×
6
7
-
6
7
×
1
5

=(

6
5
-
1
5
)×
6
7

=1×

6
7

=

6
7

(2)4-

9
15
÷
9
5
-
2
3

=4-

1
3
-
2
3

=4-(

1
3
+
2
3
),

=4-1,

=3;

(3)

2
3
-
5
6
×
3
10
+
3
2

=

2
3
-
1
4
+
3
2

=

5
12
+
3
2

=

23
12

(4)

7
4
÷(
2
3
+
1
2
)×
4
5

=

7
4
÷
7
6
×
4
5

=

3
2
×
4
5

=

6
5

单项选择题 A1/A2型题
单项选择题