分析:(1)直接去括號(hào)后進(jìn)行有理數(shù)的加減運(yùn)算;
(2)先去括號(hào)和絕對(duì)值,在進(jìn)行有理數(shù)的加減運(yùn)算;
(3)先將帶分?jǐn)?shù)化為假分?jǐn)?shù),再進(jìn)行有理數(shù)的乘除運(yùn)算;
(4)運(yùn)用乘法分配律進(jìn)行計(jì)算就可以了;
(5)先計(jì)算乘方,再計(jì)算乘除,最后計(jì)算加減;
(6)先計(jì)算乘方,再計(jì)算除法和乘法,最后計(jì)算加減;
(7)先計(jì)算乘方,再利用乘法分配律去括號(hào),最后進(jìn)行有理數(shù)的加減;
(8)先計(jì)算乘方、去絕對(duì)值和計(jì)算括號(hào)里面再進(jìn)行乘除和加減運(yùn)算.
解答:解:(1)原式=24-14-16+8
=2;
(2)原式=
+-3=2-3
=-1;
(3)原式=
-54××(-)×=6;
(4)原式=
-(×36-×36+×36)=-(18-20+21)
=-19;
(5)原式=-4×7-(-3)×6+5
=-28+18+5
=-5;
(6)原式=
-18÷9+5×(-) =-2-
=-2
;
(7)原式=
-1-[1-1+]×6=-1-1
=-2;
(8)原式=
××(-2)+÷[+]×-=-4+
×
×
-
=-4+2-
=-2-
=-2
.
點(diǎn)評(píng):本題考查了有理數(shù)的乘方運(yùn)算,有理數(shù)的乘除運(yùn)算及有理數(shù)的加減運(yùn)算的運(yùn)用,乘法分配律的運(yùn)用,去括號(hào)法則的運(yùn)用.在解答中注意運(yùn)算的符號(hào)和運(yùn)算的順序.