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计算:(1)-7+13-6+20(2)(-49)-(+91)-(-5)+(-9)(3)(-5)×6+(-125)÷(-5)(4)1+(-2)+|-2-3|-5;(5)8+2×32-(-2×3)2(6)−12012×[(−2)5−32−514÷(−17)]−2.5.
题目详情
计算:
(1)-7+13-6+20
(2)(-49)-(+91)-(-5)+(-9)
(3)(-5)×6+(-125)÷(-5)
(4)1+(-2)+|-2-3|-5;
(5)8+2×32-(-2×3)2
(6)−12012×[(−2)5−32−
÷(−
)]−2.5.
22
−12012×[(−2)5−32−
÷(−
)]−2.5.12012×[(−2)5−32−
÷(−
)]−2.5.12012×[(−2)5−32−
÷(−
)]−2.5.2012×[(−2)5−32−
÷(−
)]−2.5.)5−32−
÷(−
)]−2.5.)5−32−
÷(−
)]−2.5.5−32−
÷(−
)]−2.5.32−
÷(−
)]−2.5.32−
÷(−
)]−2.5.2−
÷(−
)]−2.5.
5 5 14 14
1 1 7 7
(1)-7+13-6+20
(2)(-49)-(+91)-(-5)+(-9)
(3)(-5)×6+(-125)÷(-5)
(4)1+(-2)+|-2-3|-5;
(5)8+2×32-(-2×3)2
(6)−12012×[(−2)5−32−
5 |
14 |
1 |
7 |
22
−12012×[(−2)5−32−
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
▼优质解答
答案和解析
(1)原式=-13+13+20
=20;
(2)原式=-49-91+5-9
=-144;
(3)原式=-30+25
=-5;
(4)原式=1+(-2)+5-5
=-1;
(5)原式=8+2×9-36
=8+18-36
=-10;
(6)原式=-1×(-32-9+
)-2.5
=38.5-2.5
=36.
5 5 52 2 2)-2.5
=38.5-2.5
=36.
=20;
(2)原式=-49-91+5-9
=-144;
(3)原式=-30+25
=-5;
(4)原式=1+(-2)+5-5
=-1;
(5)原式=8+2×9-36
=8+18-36
=-10;
(6)原式=-1×(-32-9+
5 |
2 |
=38.5-2.5
=36.
5 |
2 |
=38.5-2.5
=36.
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