问题 解答题
下面各题,怎样算简便就怎样算
1
5
×
2
3
÷
4
9
②2-
5
13
-
8
13
③(
1
3
+
1
4
-
1
24
)×24
3
20
×101-
3
20
5
6
÷
3
4
-
4
9
×
3
4
1
3
÷(
11
12
-
3
4
答案

1
5
×
2
3
÷
4
9

=

1
5
×
2
3
×
9
4

=

3
10

②2-

5
13
-
8
13

=2-(

5
13
+
8
13
),

=2-1,

=1;

③(

1
3
+
1
4
-
1
24
)×24,

=

1
3
×24+
1
4
×24-
1
24
×24,

=8+6-1,

=13;

3
20
×101-
3
20

=

3
20
×(101-1),

=

3
20
×100,

=15;

5
6
÷
3
4
-
4
9
×
3
4

=

5
6
×
4
3
-
4
9
×
3
4

=

10
9
-
1
3

=

7
9

1
3
÷(
11
12
-
3
4
),

=

1
3
÷
1
6

=2.

单项选择题