问题 解答题
能简算的要简算.
3
4
×
6
13
÷
9
26
4
9
÷(
1
3
+
1
3
5
9
×7+
5
9
×11
[1-(
1
4
+
3
8
)]÷
1
4
答案

(1)

3
4
×
6
13
÷
9
26

=

3
4
×
6
13
×
26
9

=

3
4
×(
6
13
×
26
9
),

=

3
4
×
4
3

=1;

(2)

4
9
÷(
1
3
+
1
3
),

=

4
9
÷
2
3

=

2
3

(3)

5
9
×7+
5
9
×11,

=

5
9
×(7+11),

=

5
9
×18,

=10;

(4)[1-(

1
4
+
3
8
)]÷
1
4

=[1-

5
8
1
4

=

3
8
÷
1
4

=

3
2

单项选择题
单项选择题