题目内容

计算:
(1)1-
4
7
+
1
5
-
3
7
+
9
5

(2)-5
3
4
-[-1.5-(4.5-4
3
4
)]

(3)-24×(-
1
2
+
3
4
-
1
3
)

(4)18×(-
2
3
)+13×
2
3
-4×
2
3

(5)-1
1
2
×(
1
3
-1)÷|-
1
13
|

(6)-14÷(-52)×(-
5
3
)+|0.8-1|
(1)1-
4
7
+
1
5
-
3
7
+
9
5

=1-
4
7
-
3
7
+
9
5
+
1
5

=1-1+2
=2;

(2)-5
3
4
-[-1.5-(4.5-4
3
4
)]
=-5
3
4
-(-1.5-4.5+4
3
4

=-5
3
4
+1.5+4.5-4
3
4

=-10.5+6
=-4.5;

(3)-24×(-
1
2
+
3
4
-
1
3

=-
1
2
×(-24)+
3
4
×(-24)-
1
3
×(-24)
=12-18+8
=20-18
=2;

(4)18×(-
2
3
)+13×
2
3
-4×
2
3

=
2
3
×(-18+13-4)
=
2
3
×(-9)
=-6;

(5)-1
1
2
×(
1
3
-1)÷|-
1
13
|
=-
3
2
×(-
2
3
)×13
=13;

(6)-14÷(-52)×(-
5
3
)+|0.8-1|
=-1×(-
1
25
)×(-
5
3
)+0.2
=-
1
15
+
1
5

=
2
15
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