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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
1
4
)−(+5
1
3
)−(−4
1
4
)
(3)22+(-4)+(-2)+4;         (4)(-8)+(+0.25)-(-9)+(-
1
4

(5)(-81)÷2
1
4
;               (6)(−3)×
5
6
×(−
4
5
)×(−
1
4
)
(7)(1-
1
6
+
3
4
)×(-48);        (8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

(−4
1
4
)−(+5
1
3
)−(−4
1
4
)
(3)22+(-4)+(-2)+4;         (4)(-8)+(+0.25)-(-9)+(-
1
4

(5)(-81)÷2
1
4
;               (6)(−3)×
5
6
×(−
4
5
)×(−
1
4
)
(7)(1-
1
6
+
3
4
)×(-48);        (8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2
1
4
1144
1
3
1133
1
4
1144
1
4

(5)(-81)÷2
1
4
;               (6)(−3)×
5
6
×(−
4
5
)×(−
1
4
)
(7)(1-
1
6
+
3
4
)×(-48);        (8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2
1
4
1144
2
1
4
;               (6)(−3)×
5
6
×(−
4
5
)×(−
1
4
)
(7)(1-
1
6
+
3
4
)×(-48);        (8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2
1
4
1144(−3)×
5
6
×(−
4
5
)×(−
1
4
)
(7)(1-
1
6
+
3
4
)×(-48);        (8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2
5
6
5566
4
5
4455
1
4
1144
1
6
+
3
4
)×(-48);        (8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2
1
6
1166
3
4
)×(-48);        (8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2
3
4
3344
1
2
÷
3
4
×(-0.2)×(-
5
2
1
2
1122
3
4
×(-0.2)×(-
5
2
3
4
3344
5
2
5
2
5522
▼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
1
4
)−(+5
1
3
)−(−4
1
4
)
=(-4
1
4
)-5
1
3
+4
1
4

=(-4
1
4
)+4
1
4
-5
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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
(−4
1
4
111444)−(+5
1
3
111333)−(−4
1
4
111444)
=(-4
1
4
)-5
1
3
+4
1
4

=(-4
1
4
)+4
1
4
-5
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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
4
111444)-5
1
3
+4
1
4

=(-4
1
4
)+4
1
4
-5
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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
3
111333+4
1
4

=(-4
1
4
)+4
1
4
-5
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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
4
111444
=(-4
1
4
)+4
1
4
-5
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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
4
111444)+4
1
4
-5
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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
4
111444-5
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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
3
111333
=-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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
3
111333;

(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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
4
111444)
=(-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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
2
1
4
111444
=(-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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
÷
9
4
999444
=(-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
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
4
9
444999
=-36;

(6)(−3)×
5
6
×(−
4
5
)×(−
1
4
)
=-3×
5
6
×
4
5
×
1
4

=-
1
2


(7)(1-
1
6
+
3
4
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
(−3)×
5
6
555666×(−
4
5
444555)×(−
1
4
111444)
=-3×
5
6
×
4
5
×
1
4

=-
1
2


(7)(1-
1
6
+
3
4
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
5
6
555666×
4
5
444555×
1
4
111444
=-
1
2


(7)(1-
1
6
+
3
4
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
2
111222;

(7)(1-
1
6
+
3
4
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
6
111666+
3
4
)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
3
4
333444)×(-48)
=1×(-48)-
1
6
×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
6
111666×(-48)+
3
4
×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
3
4
333444×(-48)
=-48+8-36
=-84+8
=-(84-8)
=-76;

(8)-1
1
2
÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
2
111222÷
3
4
×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
3
4
333444×(-0.2)×(-
5
2

=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
5
2
555222)
=-
3
2
×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
3
2
333222×
4
3
×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
4
3
444333×(-
1
5
)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
1
5
111555)×(-
5
2

=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
5
2
555222)
=-
3
2
×
4
3
×
1
5
×
5
2

=-1.
3
2
333222×
4
3
×
1
5
×
5
2

=-1.
4
3
444333×
1
5
×
5
2

=-1.
1
5
111555×
5
2

=-1.
5
2
555222
=-1.