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计算:(1)(-6.82)+3.78+(-3.18)-3.78(2)-13-7+5(3)|-45|+(-71)+|-5|+(-9)(4)314-235+534-825(5)(-313)-(+12)+(+434)-(-123)(6)-1-[(-334)+(+2.75)].

题目详情
计算:
(1)(-6.82)+3.78+(-3.18)-3.78
(2)-13-7+5
(3)|-45|+(-71)+|-5|+(-9)
(4)3
1
4
-2
3
5
+5
3
4
-8
2
5

(5)(-3
1
3
)-(+
1
2
)+(+4
3
4
)-(-1
2
3
)         
(6)-1-[(-3
3
4
)+(+2.75)].
▼优质解答
答案和解析
(1)原式=(-6.82-3.18)+(3.78-3.78)=-10;
(2)原式=-20+5=-15;
(3)原式=45+5-71-9=50-80=-40;
(4)原式=3
1
4
+5
3
4
-2
3
5
-8
2
5
=9-11=-2;
(5)原式=-3
1
3
+1
2
3
-
1
2
+4
3
4
=-
5
3
+
17
4
=
31
12

(6)原式=-1+3
3
4
-2.75=-1+1=0.