计算
(1)-|-3|2÷(-3)2;(2)0-(-3)2÷3×(-2)3;
(3); (4)-14+(1-0.5)××[2-(-3)2];
(5)12÷(-3-+1);(6).
网友回答
解:(1)-|-3|2÷(-3)2
=-9÷9
=-1;
(2)0-(-3)2÷3×(-2)3
=0+9÷3×8
=24;
(3)
=-3-÷2×
=;
(4)-14+(1-0.5)××[2-(-3)2]
=-1+××(-7)
=;
(5)12÷(-3-+1)
=12÷(-1-)
=12×(-)
=-;
(6)
=×36-3×36+×36-×36
=18-108+30-21
=-81.
解析分析:(1)(2)(3)(4)首先计算括号内面的,然后计算乘除,接着计算加减即可求解;
(5)首先计算括号内面的,然后把除法改为乘法,接着计算即可求解;
(6)首先利用乘法分配律打开括号,然后计算即可简便求解.
点评:此题主要考查了有理数的混合运算法则:解题时首先计算括号内面的,然后计算乘除,接着计算加减即可求解.