计算:
(1)-14-×[2-(-3)2];
(2)(-1)4-(1-0.5)××[2-(-2)2];
(3)(-2)2-22-|-|×(-1)2;
(4)(-2)×(-0.5)3×(-2)2×(-8).
网友回答
解:(1)-14-×[2-(-3)2],
=-1-×(2-9),
=-1+,
=;
(2)(-1)4-(1-0.5)××[2-(-2)2],
=1-××(2-4),
=1+,
=;
(3)(-2)2-22-|-|×(-1)2,
=4-4-×1,
=-;
(4)(-2)×(-0.5)3×(-2)2×(-8),
=-×(-)×4×(-8),
=-××4×8,
=-10.
解析分析:分别根据有理数的混合运算顺序,先算乘方,再算乘除,最后算加减,有括号先算括号里面的进行计算即可得解.
点评:本题考查了有理数的乘方,有理数的混合运算,要注意-14和(-1)4的区别.