早教吧作业答案频道 -->其他-->
计算下列各题(1)(5-6)-(7-9);(2)(−414)−(+513)−(−414)(3)22+(-4)+(-2)+4;(4)(-8)+(+0.25)-(-9)+(-14)(5)(-81)÷214;(6)(−3)×56×(−45)×(
题目详情
计算下列各题
(1)(5-6)-(7-9); (2)(−4
)−(+5
)−(−4
)
(3)22+(-4)+(-2)+4; (4)(-8)+(+0.25)-(-9)+(-
)
(5)(-81)÷2
; (6)(−3)×
×(−
)×(−
)
(7)(1-
+
)×(-48); (8)-1
÷
×(-0.2)×(-
)
(−4
)−(+5
)−(−4
)
(3)22+(-4)+(-2)+4; (4)(-8)+(+0.25)-(-9)+(-
)
(5)(-81)÷2
; (6)(−3)×
×(−
)×(−
)
(7)(1-
+
)×(-48); (8)-1
÷
×(-0.2)×(-
)
1 1 4 4
1 1 3 3
1 1 4 4
)
(5)(-81)÷2
; (6)(−3)×
×(−
)×(−
)
(7)(1-
+
)×(-48); (8)-1
÷
×(-0.2)×(-
)
1 1 4 4
2
; (6)(−3)×
×(−
)×(−
)
(7)(1-
+
)×(-48); (8)-1
÷
×(-0.2)×(-
)
1 1 4 4 (−3)×
×(−
)×(−
)
(7)(1-
+
)×(-48); (8)-1
÷
×(-0.2)×(-
)
5 5 6 6
4 4 5 5
1 1 4 4
+
)×(-48); (8)-1
÷
×(-0.2)×(-
)
1 1 6 6
)×(-48); (8)-1
÷
×(-0.2)×(-
)
3 3 4 4
÷
×(-0.2)×(-
)
1 1 2 2
×(-0.2)×(-
)
3 3 4 4
)
5 5 2 2
(1)(5-6)-(7-9); (2)(−4
1 |
4 |
1 |
3 |
1 |
4 |
(3)22+(-4)+(-2)+4; (4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
(5)(-81)÷2
1 |
4 |
5 |
6 |
4 |
5 |
1 |
4 |
(7)(1-
1 |
6 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
2 |
(−4
1 |
4 |
1 |
3 |
1 |
4 |
(3)22+(-4)+(-2)+4; (4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
(5)(-81)÷2
1 |
4 |
5 |
6 |
4 |
5 |
1 |
4 |
(7)(1-
1 |
6 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
2 |
1 |
4 |
1 |
3 |
1 |
4 |
1 |
4 |
(5)(-81)÷2
1 |
4 |
5 |
6 |
4 |
5 |
1 |
4 |
(7)(1-
1 |
6 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
2 |
1 |
4 |
2
1 |
4 |
5 |
6 |
4 |
5 |
1 |
4 |
(7)(1-
1 |
6 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
2 |
1 |
4 |
5 |
6 |
4 |
5 |
1 |
4 |
(7)(1-
1 |
6 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
2 |
5 |
6 |
4 |
5 |
1 |
4 |
1 |
6 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
2 |
1 |
6 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
2 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
2 |
1 |
2 |
3 |
4 |
5 |
2 |
3 |
4 |
5 |
2 |
5 |
2 |
▼优质解答
答案和解析
(1)(5-6)-(7-9)
=[5+(-6)]-[7+(-9)]
=-1-(-2)
=-1+2
=1;
(2)(−4
)−(+5
)−(−4
)
=(-4
)-5
+4
=(-4
)+4
-5
=-5
;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1. (−4
1 1 14 4 4)−(+5
1 1 13 3 3)−(−4
1 1 14 4 4)
=(-4
)-5
+4
=(-4
)+4
-5
=-5
;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 14 4 4)-5
+4
=(-4
)+4
-5
=-5
;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 13 3 3+4
=(-4
)+4
-5
=-5
;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 14 4 4
=(-4
)+4
-5
=-5
;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 14 4 4)+4
-5
=-5
;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 14 4 4-5
=-5
;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 13 3 3
=-5
;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 13 3 3;
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 14 4 4)
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1. 2
1 1 14 4 4
=(-81)÷
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1. ÷
9 9 94 4 4
=(-81)×
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
4 4 49 9 9
=-36;
(6)(−3)×
×(−
)×(−
)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1. (−3)×
5 5 56 6 6×(−
4 4 45 5 5)×(−
1 1 14 4 4)
=-3×
×
×
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
5 5 56 6 6×
4 4 45 5 5×
1 1 14 4 4
=-
;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 12 2 2;
(7)(1-
+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 16 6 6+
)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
3 3 34 4 4)×(-48)
=1×(-48)-
×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 16 6 6×(-48)+
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
3 3 34 4 4×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
1 1 12 2 2÷
×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
3 3 34 4 4×(-0.2)×(-
)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
5 5 52 2 2)
=-
×
×(-
)×(-
)
=-
×
×
×
=-1.
3 3 32 2 2×
×(-
)×(-
)
=-
×
×
×
=-1.
4 4 43 3 3×(-
)×(-
)
=-
×
×
×
=-1.
1 1 15 5 5)×(-
)
=-
×
×
×
=-1.
5 5 52 2 2)
=-
×
×
×
=-1.
3 3 32 2 2×
×
×
=-1.
4 4 43 3 3×
×
=-1.
1 1 15 5 5×
=-1.
5 5 52 2 2
=-1.
=[5+(-6)]-[7+(-9)]
=-1-(-2)
=-1+2
=1;
(2)(−4
1 |
4 |
1 |
3 |
1 |
4 |
=(-4
1 |
4 |
1 |
3 |
1 |
4 |
=(-4
1 |
4 |
1 |
4 |
1 |
3 |
=-5
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1. (−4
1 |
4 |
1 |
3 |
1 |
4 |
=(-4
1 |
4 |
1 |
3 |
1 |
4 |
=(-4
1 |
4 |
1 |
4 |
1 |
3 |
=-5
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
4 |
1 |
3 |
1 |
4 |
=(-4
1 |
4 |
1 |
4 |
1 |
3 |
=-5
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
3 |
1 |
4 |
=(-4
1 |
4 |
1 |
4 |
1 |
3 |
=-5
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
4 |
=(-4
1 |
4 |
1 |
4 |
1 |
3 |
=-5
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
4 |
1 |
4 |
1 |
3 |
=-5
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
4 |
1 |
3 |
=-5
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
3 |
=-5
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
3 |
(3)22+(-4)+(-2)+4
=(22+4)+[(-4)+(-2)]
=26+(-6)
=20;
(4)(-8)+(+0.25)-(-9)+(-
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
4 |
=(-8)+(+0.25)+9+(-0.25)
=(-8)+9+[(+0.25)+(-0.25)]
=1+0
=1;
(5)(-81)÷2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1. 2
1 |
4 |
=(-81)÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1. ÷
9 |
4 |
=(-81)×
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
4 |
9 |
=-36;
(6)(−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1. (−3)×
5 |
6 |
4 |
5 |
1 |
4 |
=-3×
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
5 |
6 |
4 |
5 |
1 |
4 |
=-
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
2 |
(7)(1-
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
6 |
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
3 |
4 |
=1×(-48)-
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
6 |
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
3 |
4 |
=-48+8-36
=-84+8
=-(84-8)
=-76;
(8)-1
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
2 |
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
3 |
4 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
4 |
3 |
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
5 |
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
5 |
2 |
=-
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
3 |
2 |
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
4 |
3 |
1 |
5 |
5 |
2 |
=-1.
1 |
5 |
5 |
2 |
=-1.
5 |
2 |
=-1.
看了 计算下列各题(1)(5-6)...的网友还看了以下:
填在下面各正方形中的四个数之间都有相同的规律,根据这种规律,m的值是多少?0 4 2 6 4 8 2020-04-05 …
9年级上册数学课本习题22.1,22.2,22.3,22.4,22.5,22. 2020-05-16 …
如图,在平面直角坐标系中,ABCDEFGH是正八边形,点A的坐标为(2,0),点B的坐标为(0,2 2020-06-13 …
若家用电冰箱冷藏室的温度是4℃,冷冻室的温度比冷藏室的温度低22℃,则冷冻室的温度(℃)可列式计算 2020-06-17 …
JZL10(1)500*8008@100/200(4)B4?25;T425+4?22,6/2N2? 2020-07-09 …
用计算器算出1/22=?3/22=?5/22=?找出规律后求2/22=?4/22=?算出1/22= 2020-07-17 …
混合气体的电子总数怎么求比如22.4LCO与N2混合气体中所含电子数n=V/Vm=22.4/22. 2020-07-18 …
如图,在圆心角为90°的扇形OAB中,半径OA=4cm,C为弧AB的中点,D、E分别是OA、OB的 2020-07-22 …
如图,在平面直角坐标系中,一单位圆的圆心的初始位置在(0,1),此时P点位置是原点,圆在x轴上沿正 2020-07-26 …
在体育课的跳远比赛中,以4.00米为标准,若小东跳出了4.22米,可记做+0.22,那么小东跳出了3 2020-11-22 …