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计算:(1)(213)-(+1013)+(-815)-(+325);(2)(-137)-(-827)-(+347);(3)(-534)+14+318+(+534);(4)|-35-(+25)|+|(-14)+(-12)|;(5)18+(-12)+(-21)+(+12)

题目详情
计算:
(1)(2
1
3
)-(+10
1
3
)+(-8
1
5
)-(+3
2
5
);             
(2)(-1
3
7
)-(-8
2
7
)-(+3
4
7
);
(3)(-5
3
4
)+
1
4
+3
1
8
+(+5
3
4
);         
(4)|-
3
5
-(+
2
5
)|+|(-
1
4
)+(-
1
2
)|;
(5)18+(-12)+(-21)+(+12);      
(6)0.35+(-0.6)+0.25+(-5.4).
▼优质解答
答案和解析
(1)原式=2
1
3
-10
1
3
-8
1
5
-3
2
5
=-8-11
3
5
=-19
3
5

(2)原式=-1
3
7
+8
2
7
-3
4
7
=-5+8
2
7
=3
2
7

(3)原式=-5
3
4
+5
3
4
+
1
4
+3
1
8
=3
3
8

(4)原式=1+
3
4
=1
3
4

(5)原式=18-12-21+12=-3;
(6)原式=0.35+0.25-0.6-5.4=0.6-6=-5.4.