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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
-3
-5
+(-3
)
(3)48×(-
+
-
)
(4)-|-9|×|-1
|-(-10)
(5)-14-
×[2-(-3)2]
(6)18×(-
)+13×
-4×
.
(1)-9+12-3+8
(2)2
1 |
7 |
2 |
3 |
1 |
3 |
1 |
7 |
(3)48×(-
1 |
6 |
3 |
4 |
1 |
12 |
(4)-|-9|×|-1
2 |
3 |
(5)-14-
1 |
6 |
(6)18×(-
2 |
3 |
2 |
3 |
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
-3
-5
+(-3
)
=2
+(-3
)-3
-5
=-1-9
=-10;
(3)48×(-
+
-
)
=48×(-
)+48×
-48×
=-8+36-4
=24;
(4)-|-9|×|-1
|-(-10)
=-9×
+10
=-15+10
=-5;
(5)-14-
×[2-(-3)2]
=-1-
×[2-9]
=-1-
×[-7]
=-1+
=
;
(6)18×(-
)+13×
-4×
=(-18+13-4)×
=-9×
=-6.
=-9-3+12+8
=-12+20
=8;
(2)2
1 |
7 |
2 |
3 |
1 |
3 |
1 |
7 |
=2
1 |
7 |
1 |
7 |
2 |
3 |
1 |
3 |
=-1-9
=-10;
(3)48×(-
1 |
6 |
3 |
4 |
1 |
12 |
=48×(-
1 |
6 |
3 |
4 |
1 |
12 |
=-8+36-4
=24;
(4)-|-9|×|-1
2 |
3 |
=-9×
5 |
3 |
=-15+10
=-5;
(5)-14-
1 |
6 |
=-1-
1 |
6 |
=-1-
1 |
6 |
=-1+
7 |
6 |
=
1 |
6 |
(6)18×(-
2 |
3 |
2 |
3 |
2 |
3 |
=(-18+13-4)×
2 |
3 |
=-9×
2 |
3 |
=-6.
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