问题
解答题
计算下列各题: (1)-32-(-3)2+23-(-2)3; (2)(+10
(3)(-81)÷
(4)
(5)24×(
(6)-2×32-(-2×3)2 (7)-
|
答案
(1)原式=-9-9+8-(-8)=-18+8+8=-2;
(2)(+10
)+(-11.5)+(-101 3
)-(+4.5);1 3
=(10
-101 3
)+(-11.5)+(-4.5)1 3
=0+(-16)
=-16;
(3)原式=-81×
×4 9
×(-4 9
)=1;1 16
(4)原式=
×(-12 7
)×5 9
×0×72-4÷4-1=0-1-1=-2;7 13
(5)原式=4-18-15+8+(-8)=-29;
(6)原式=-2×9-(-6)2=-18-36=-54;
(7)原式=-
×[(-4 5
)÷(-0.25)+(-32)]=-1 2
×(-30)=24.4 5