分析:(1)先計(jì)算絕對(duì)值里邊的運(yùn)算,再利用絕對(duì)值的代數(shù)意義化簡即可得到結(jié)果;
(2)先計(jì)算乘方運(yùn)算,再計(jì)算乘除運(yùn)算,最后算加減運(yùn)算即可得到結(jié)果;
(3)先計(jì)算乘方運(yùn)算,再計(jì)算乘除運(yùn)算,最后算加減運(yùn)算即可得到結(jié)果;
(4)先計(jì)算乘方運(yùn)算,再計(jì)算乘法運(yùn)算,最后算加減運(yùn)算即可得到結(jié)果;
(5)先計(jì)算括號(hào)中的運(yùn)算以及乘方運(yùn)算,再計(jì)算乘除運(yùn)算,最后算加減運(yùn)算即可得到結(jié)果.
解答:解:(1)原式=|-5
|-|-1
|
=5
-1
=3
;
(2)原式=2×9-26×(-2)
=18+52
=70;
(3)原式=3-2
=1;
(4)原式=-16+4×1
=-16+4
=-12;
(5)原式=(55-28+33-6)÷(-27)
=54÷(-27)
=-2.
點(diǎn)評(píng):此題考查了有理數(shù)的混合運(yùn)算,有理數(shù)的混合運(yùn)算首先弄清運(yùn)算順序,先乘方,再乘除,最后算加減,有括號(hào)先算括號(hào)里邊的同級(jí)運(yùn)算從左到右依次進(jìn)行計(jì)算,然后利用各種運(yùn)算法則計(jì)算,有時(shí)可以利用運(yùn)算律來簡化運(yùn)算.