答案
解:(1)原式=-9-9+8-(-8)=-18+8+8=-2;
(2)(+10
)+(-11.5)+(-10
)-(+4.5);
=(10
-10
)+(-11.5)+(-4.5)
=0+(-16)
=-16;
(3)原式=-81×
×
×(-
)=1;
(4)原式=
×(-
)×
×0×72-4÷4-1=0-1-1=-2;
(5)原式=4-18-15+8+(-8)=-29;
(6)原式=-2×9-(-6)2=-18-36=-54;
(7)原式=-
×[(-
)÷(-0.25)+(-32)]=-
×(-30)=24.
解:(1)原式=-9-9+8-(-8)=-18+8+8=-2;
(2)(+10
)+(-11.5)+(-10
)-(+4.5);
=(10
-10
)+(-11.5)+(-4.5)
=0+(-16)
=-16;
(3)原式=-81×
×
×(-
)=1;
(4)原式=
×(-
)×
×0×72-4÷4-1=0-1-1=-2;
(5)原式=4-18-15+8+(-8)=-29;
(6)原式=-2×9-(-6)2=-18-36=-54;
(7)原式=-
×[(-
)÷(-0.25)+(-32)]=-
×(-30)=24.