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(1)-1+11-2+4-12(2)(-43)+(-28)-(+27)-(-21)(3)(−1.5)−(−5.25)+(+334)−(+612)(4)[1.4-(-3.5+5.2)-4.3]-(-1.5)(5)|−713+212|+(−213)+|−4−12|(6)−38−(+14)−(−12)−1219−158+(−214)−(−8
题目详情
(1)-1+11-2+4-12
(2)(-43)+(-28)-(+27)-(-21)
(3)(−1.5)−(−5.25)+(+3
)−(+6
)
(4)[1.4-(-3.5+5.2)-4.3]-(-1.5)
(5)|−7
+2
|+(−2
)+|−4−
|
(6)−
−(+
)−(−
)−
−1
+(−2
)−(−8
).
(2)(-43)+(-28)-(+27)-(-21)
(3)(−1.5)−(−5.25)+(+3
3 |
4 |
1 |
2 |
(4)[1.4-(-3.5+5.2)-4.3]-(-1.5)
(5)|−7
1 |
3 |
1 |
2 |
1 |
3 |
1 |
2 |
(6)−
3 |
8 |
1 |
4 |
1 |
2 |
12 |
19 |
5 |
8 |
1 |
4 |
12 |
19 |
▼优质解答
答案和解析
(1)原式=(-1-2-12)+(11+4)
=-15+15
=0;
(2)原式=-43-28-27+21
=-98+21
=-77;
(3)原式=-1.5+5.25+3.75-6.5
=-8+9
=1;
(4)原式=1.4+3.5-5.2-4.3+1.5
=6.4-9.5
=-3.1;
(5)原式=4
-2
+4
=8
-2
=6
;
(6)原式=(-
-1
)+(-
-2
)+
+(-
+8
)
=-2-2+7
=3.
=-15+15
=0;
(2)原式=-43-28-27+21
=-98+21
=-77;
(3)原式=-1.5+5.25+3.75-6.5
=-8+9
=1;
(4)原式=1.4+3.5-5.2-4.3+1.5
=6.4-9.5
=-3.1;
(5)原式=4
1 |
6 |
1 |
3 |
1 |
2 |
=8
2 |
3 |
1 |
3 |
=6
1 |
3 |
(6)原式=(-
3 |
8 |
5 |
8 |
1 |
4 |
1 |
4 |
1 |
2 |
12 |
19 |
12 |
19 |
=-2-2+7
=3.
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