答案
解:(1)原式=
+1
+1
=2+1
=3
;
(2)原式=2+2.5-3=4.5-3=1.5;
(3)原式=24+8+(-14)+(-16)=32+(-30)=2;
(4)原式=-40+(-28)+(-24)+19=-73;
(5)原式=1-1=0;
(6)原式=(-36)×
-(-36)×
+(-36)×
=-27+30-28=-27-28+30=-26;
(7)原式=-1-(3+8)÷6=-1-11÷6=-1-
=-
;
(8)原式=(-
)×
-9×
=-
-4=-4
;
(9)原式=-1-
××(2-9)=-1-
××(-7)=-1+
=
;
(10)原式=-81
÷+
÷9=-81×
+
×
=-36+
=-35
.
解:(1)原式=
+1
+1
=2+1
=3
;
(2)原式=2+2.5-3=4.5-3=1.5;
(3)原式=24+8+(-14)+(-16)=32+(-30)=2;
(4)原式=-40+(-28)+(-24)+19=-73;
(5)原式=1-1=0;
(6)原式=(-36)×
-(-36)×
+(-36)×
=-27+30-28=-27-28+30=-26;
(7)原式=-1-(3+8)÷6=-1-11÷6=-1-
=-
;
(8)原式=(-
)×
-9×
=-
-4=-4
;
(9)原式=-1-
××(2-9)=-1-
××(-7)=-1+
=
;
(10)原式=-81
÷+
÷9=-81×
+
×
=-36+
=-35
.