题目内容

(1)(-100)+100
(2)(-35)+0
(3)(-0.5)+4.4
(4)(-16)+(-8)
(5)(-4.2)+4.25
(6)0-(+52)
(7)(-14)-(-15)
(8)(-1.24)-(+4.76)
(9)(-6)×0
(10)(-0.5)×(-8)
(11)(
1
4
-
1
2
+
1
6
)×12

(12)100×(-1)×(-0.1)
(13)(-
1
2
)-(-3
1
4
)+(+2
3
4
)-(+5
1
2
)

(14)|-2
1
4
|-(-
3
4
)+1-|1-
1
2
|

(15)1-(-1)(-1)-(-1)×0
(16)-4.2+5.7-7.6+10.1-5.5
(17)25×
3
4
-25×
1
2
-25×(-
1
4
)

(18)(-5)-(-25)×
1
5
×(-4)+(-6)×
1
2
(1)原式=0;

(2)原式=-35;

(3)原式=4.4-0.5
=3.9;

(4)原式=-24;

(5)原式=0.05;

(6)原式=-52;

(7)原式=-14+15
=1;

(8)原式=-1.24-4.76
=-6;

(9)原式=0;

(10)原式=4;

(11)原式=
1
4
×12-
1
2
×12+
1
6
×12
=3-6+2=5-6
=-1;

(12)原式=10;

(13)原式=-
1
2
+3
1
4
+2
3
4
-5
1
2

=-6+6
=0;

(14)原式=2
1
4
+
3
4
+1-
1
2

=3+
1
2

=3
1
2


(15)原式=1-1-0
=0;

(16)原式=-4.2-5.5+5.7-7.6+10.1
=-9.7+5.7+2.5
=-4+2.5
=-1.5;

(17)原式=25(
3
4
-
1
2
+
1
4

=25×
1
2

=12.5;

(18)原式=-5-20-3
=-28.
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