早教吧作业答案频道 -->其他-->
请你计算(要注意符号和检查)(1)(-53)+(+21)-(-69)-(+37)(2)−712+611−512+511(3)[(-7)-(-10)]-(-8)(4)−0.5+(−1513)−(−17.5)−|−1223|(5)(−3)×(−75)×(−13)×47.
题目详情
请你计算(要注意符号和检查)
(1)(-53)+(+21)-(-69)-(+37)
(2)−
+
−
+
(3)[(-7)-(-10)]-(-8)
(4)−0.5+(−15
)−(−17.5)−|−12
|
(5)(−3)×(−
)×(−
)×
.
−
+
−
+
(3)[(-7)-(-10)]-(-8)
(4)−0.5+(−15
)−(−17.5)−|−12
|
(5)(−3)×(−
)×(−
)×
.
7 7 12 12
6 6 11 11
5 5 12 12
5 5 11 11
−0.5+(−15
)−(−17.5)−|−12
|
(5)(−3)×(−
)×(−
)×
.
1 1 3 3
2 2 3 3
(−3)×(−
)×(−
)×
.
7 7 5 5
1 1 3 3
4 4 7 7
(1)(-53)+(+21)-(-69)-(+37)
(2)−
| 7 |
| 12 |
| 6 |
| 11 |
| 5 |
| 12 |
| 5 |
| 11 |
(3)[(-7)-(-10)]-(-8)
(4)−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
−
| 7 |
| 12 |
| 6 |
| 11 |
| 5 |
| 12 |
| 5 |
| 11 |
(3)[(-7)-(-10)]-(-8)
(4)−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 12 |
| 6 |
| 11 |
| 5 |
| 12 |
| 5 |
| 11 |
−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 1 |
| 3 |
| 2 |
| 3 |
(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
▼优质解答
答案和解析
(1)(-53)+(+21)-(-69)-(+37)=-53+21+69-37=0;
(2)−
+
−
+
=−
-
+
+
=0;
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
)−(−17.5)−|−12
|=-0.5+17.5-15
-12
=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
. −
7 7 712 12 12+
6 6 611 11 11−
5 5 512 12 12+
5 5 511 11 11=−
-
+
+
=0;
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
)−(−17.5)−|−12
|=-0.5+17.5-15
-12
=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
. −
7 7 712 12 12-
+
+
=0;
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
)−(−17.5)−|−12
|=-0.5+17.5-15
-12
=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
.
5 5 512 12 12+
+
=0;
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
)−(−17.5)−|−12
|=-0.5+17.5-15
-12
=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
.
6 6 611 11 11+
=0;
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
)−(−17.5)−|−12
|=-0.5+17.5-15
-12
=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
. +
5 5 511 11 11=0;
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
)−(−17.5)−|−12
|=-0.5+17.5-15
-12
=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
. −0.5+(−15
1 1 13 3 3)−(−17.5)−|−12
2 2 23 3 3|=-0.5+17.5-15
-12
=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
.
1 1 13 3 3-12
=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
.
2 2 23 3 3=17-28=-11;
(5)(−3)×(−
)×(−
)×
=-
×
=-
. (−3)×(−
7 7 75 5 5)×(−
1 1 13 3 3)×
4 4 47 7 7=-
×
=-
.
7 7 75 5 5×
=-
.
4 4 47 7 7=-
.
4 4 45 5 5.
(2)−
| 7 |
| 12 |
| 6 |
| 11 |
| 5 |
| 12 |
| 5 |
| 11 |
| 7 |
| 12 |
| 5 |
| 12 |
| 6 |
| 11 |
| 5 |
| 11 |
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 7 |
| 12 |
| 6 |
| 11 |
| 5 |
| 12 |
| 5 |
| 11 |
| 7 |
| 12 |
| 5 |
| 12 |
| 6 |
| 11 |
| 5 |
| 11 |
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 7 |
| 12 |
| 5 |
| 12 |
| 6 |
| 11 |
| 5 |
| 11 |
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 5 |
| 12 |
| 6 |
| 11 |
| 5 |
| 11 |
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 6 |
| 11 |
| 5 |
| 11 |
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 5 |
| 11 |
(3)[(-7)-(-10)]-(-8)=3-(-8)=11;
(4)−0.5+(−15
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 1 |
| 3 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 2 |
| 3 |
(5)(−3)×(−
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 7 |
| 5 |
| 1 |
| 3 |
| 4 |
| 7 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 7 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 4 |
| 7 |
| 4 |
| 5 |
| 4 |
| 5 |
看了 请你计算(要注意符号和检查)...的网友还看了以下:
S=(1+1/1*2+(2+1/2*3)+(3+1/3*4)+...+(20+1/20*21)S= 2020-04-27 …
1+2+3+n=2分之1n(n+1),n是正整数,研究1*2+2*3+你(n+1),观察1*2=3 2020-05-20 …
1+1/1*3+1/2*3+1/2*5+1/3*5+1/3*7+1/4*7+1/4*9原式=2*[ 2020-06-11 …
巧算分数的和,会的同学帮忙,1.1/2*3*4+1/3*4*5+...+1/18*19*202.1 2020-06-16 …
都是分数的题3又1/2+5又1/41/2+1/3-1/63又1/4-2又3/5+5又3/4-3又2 2020-07-17 …
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+2×3+3×4+4×5+…+n(n+1)=(n为自然数).因为:1×2=1/3×1×2×3 2020-07-21 …
1/1*2+1/2*3+1/3*4+..+1/8*9+1/9*10=()1+2-3-4+5+6-7- 2020-11-03 …
求一道预备班数学期中考试的答案小明在做题时发现了一个规律:1*2/1=1-2/1,2*3/1=2/1 2020-11-05 …
观察下列等式:1/1*2=1-1/2,1/2*3=1/2-1/3,1/3*4=1/3-1/4.在线等 2020-12-05 …