分析:按照有理数混合运算的顺序,先乘方后乘除最后算加减,有括号的先算括号里面的.
解答:解:(1)
33×(-)3-2÷(-)3=27×(-
)-2÷(-
)
=-1+16
=15;
(2)(-4)
2÷(-2)
3-(-7)
=16÷(-8)+7
=-2+7
=5;
(3)(-1)
4-[(-2)
3-(-3)
3]÷(-19)
=1-[-8+27]÷(-19)
=1-19÷(-19)
=1+1
=2;
(4)
(-1)2÷(-)×(-)=
×
×
=
;
(5)
-14-[2-(-3)2]=-1-
×[2-9]
=-1-
×[-7]
=-1+
=
;
(6)(-1)2010+(-4)2010×(-)2009=1+(-4)×[(-4)×(-
)]
2009=1+(-4))×1
2009=1+(-4)×1
=1-4
=-3;
(7)
-32+(-2)2×(-)+|-22|=-9+
×(-
)+4
=-9-1+4
=-6;
(8)[-5
3-(-3)
3]÷[(-5)-(-3)]
=[-125+27]÷(-2)
=98÷2
=49.
点评:本题考查的是有理数的运算能力.注意:
(1)要正确掌握运算顺序,在混合运算中要特别注意运算顺序:先三级,后二级,再一级;有括号的先算括号里面的;同级运算按从左到右的顺序;
(2)去括号法则:--得+,-+得-,++得+,+-得-.