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计算(1)-9+12-3+8(2)217-323-513+(-317)(3)48×(-16+34-112)(4)-|-9|×|-123|-(-10)(5)-14-16×[2-(-3)2](6)18×(-23)+13×23-4×23.

题目详情
计算
(1)-9+12-3+8                     
(2)2
1
7
-3
2
3
-5
1
3
+(-3
1
7

(3)48×(-
1
6
+
3
4
-
1
12

(4)-|-9|×|-1
2
3
|-(-10)
(5)-14-
1
6
×[2-(-3)2]
(6)18×(-
2
3
)+13×
2
3
-4×
2
3
▼优质解答
答案和解析
(1)-9+12-3+8
=-9-3+12+8
=-12+20
=8;
                     
(2)2
1
7
-3
2
3
-5
1
3
+(-3
1
7

=2
1
7
+(-3
1
7
)-3
2
3
-5
1
3

=-1-9
=-10;

(3)48×(-
1
6
+
3
4
-
1
12

=48×(-
1
6
)+48×
3
4
-48×
1
12

=-8+36-4
=24;

(4)-|-9|×|-1
2
3
|-(-10)
=-9×
5
3
+10
=-15+10
=-5;

(5)-14-
1
6
×[2-(-3)2]
=-1-
1
6
×[2-9]
=-1-
1
6
×[-7]
=-1+
7
6

=
1
6


(6)18×(-
2
3
)+13×
2
3
-4×
2
3

=(-18+13-4)×
2
3

=-9×
2
3

=-6.