问题 解答题
(1-
1
2
-
1
4
)÷
1
4

3
8
×
5
6
×2
2
3

6÷0.5-9
1
14
×
1
3
+
1
14
×
2
3
答案

(1)(1-

1
2
-
1
4
)÷
1
4

=(1-

1
2
-
1
4
)×4,

=1×4-

1
2
×4-
1
4
×4,

=4-2-1,

=1;

(2)

3
8
×
5
6
×2
2
3

=

3
8
×
5
6
×
8
3

=

3
8
×
8
3
×
5
6

=1×

5
6

=

5
6

(3)6÷0.5-9,

=12-9,

=3;

(4)

1
14
×
1
3
+
1
14
×
2
3

=

1
14
×(
1
3
+
2
3
),

=

1
14
×1,

=

1
14

单项选择题
单项选择题