题目内容

计算题
(1)(-8)÷[(-
3
8
)×(-
3
8
)÷(-2
1
4
)];
(2)(-36)×(-
4
9
+
5
6
-
7
12
);
(3)(-
1
6
2÷(
1
2
-
1
3
2÷|-6|2×(-
1
2
2
(4)|
1
2
-1|+|
1
3
-
1
2
|+|
1
4
-
1
3
|+…+|
1
2009
-
1
2008
|
(1)原式=-8÷[(-
3
8
)×(-
3
8
)×(-
4
9
)]
=-8÷(-
1
16

=-8×(-16)
=128.
(2)原式=(-36)×(-
4
9
)+(-36)×
5
6
+(-36)×(-
7
12

=16-30+21
=7.
(3)原式=
1
36
÷(
1
6
2÷36×
1
4

=
1
36
×
1
4

=
1
144

(4)原式=1-
1
2
+
1
2
-
1
3
+
1
3
-
1
4
+…+
1
2008
-
1
2009

=1-
1
2009

=
2008
2009
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网