早教吧作业答案频道 -->其他-->
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)-12008×[(-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)-12008×[(-2)5-32-
÷(−
)]-2.5.
22
200852
÷(−
)]-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)-12008×[(-2)5-32-
5 |
14 |
1 |
7 |
22
200852
5 |
14 |
1 |
7 |
5 |
14 |
1 |
7 |
▼优质解答
答案和解析
(1)-7+13-6+20,
=-7-6+13+20,
=-13+13+20,
=20;
(2)(-49)-(+91)-(-5)+(-9),
=-49-91+5-9,
=-149+5,
=-144;
(3)(-5)×6+(-125)÷(-5),
=-30+25,
=-5;
(4)1+(-2)+|-2-3|-5,
=1-2+5-5,
=-1;
(5)8+2×322-(-2×3)22,
=8+18-36,
=26-36,
=-10;
(6)-120082008×[(-2)55-322-
÷(−
)]-2.5,
=-1×(-32-9+
×7)-2.5,
=-(-41+
)-2.5,
=41-2.5-2.5,
=36.
5 5 514 14 14÷(−
1 1 17 7 7)]-2.5,
=-1×(-32-9+
×7)-2.5,
=-(-41+
)-2.5,
=41-2.5-2.5,
=36.
5 5 514 14 14×7)-2.5,
=-(-41+
)-2.5,
=41-2.5-2.5,
=36.
5 5 52 2 2)-2.5,
=41-2.5-2.5,
=36.
=-7-6+13+20,
=-13+13+20,
=20;
(2)(-49)-(+91)-(-5)+(-9),
=-49-91+5-9,
=-149+5,
=-144;
(3)(-5)×6+(-125)÷(-5),
=-30+25,
=-5;
(4)1+(-2)+|-2-3|-5,
=1-2+5-5,
=-1;
(5)8+2×322-(-2×3)22,
=8+18-36,
=26-36,
=-10;
(6)-120082008×[(-2)55-322-
5 |
14 |
1 |
7 |
=-1×(-32-9+
5 |
14 |
=-(-41+
5 |
2 |
=41-2.5-2.5,
=36.
5 |
14 |
1 |
7 |
=-1×(-32-9+
5 |
14 |
=-(-41+
5 |
2 |
=41-2.5-2.5,
=36.
5 |
14 |
=-(-41+
5 |
2 |
=41-2.5-2.5,
=36.
5 |
2 |
=41-2.5-2.5,
=36.
看了 计算:(1)-7+13-6+...的网友还看了以下:
简便计算1.(+1)+(-3)+(+5)+(-7)+…+(+97)+(-99)2.1/2+1/3+ 2020-04-07 …
1/2+(1/3+2/3)+(1/4+2/4+3/4)+.+(1/20+2/20+.+19/20) 2020-06-10 …
英语翻译2.3.1.4货物码放符合规定距离.2.3.1.4.1垛与垛间距不少于20厘米.2.3.1 2020-07-10 …
(1/2+1/3+1/4+...+1/20)+(2/3+2/4+2/5...+2/20)+(3/4 2020-07-16 …
算的过程也要写下来,不要直接写答案(8.)5/x=4/3x1(9)x+3/4=x/5(10)10x 2020-07-21 …
(1/2+1/3+1/4+.1/20)+(2/3+2/42/5+.2/20)+.(3/4+3/5+ 2020-07-22 …
1.根据:1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4……求:1/6+1/1 2020-11-13 …
数学选择题已知六个比:(1)7.5:1/2(2)4:3(3)4.5:3/10(4)1/6:75%(5 2020-11-28 …
(1/2+1/3+1/4.+1/20)+(2/3+2/4.+2/20)+(3/4+3/5.+3/20 2020-11-29 …
计算.4÷8/3-1/2=1/5+2/7÷5/7=8÷2/3+4=25÷(1-1/6)=18÷(1+ 2020-12-26 …