问题 解答题
计算下列各题(要求写出解题关键步骤):
(1)3-2×(-5)2
(2)-22-(-3)3×(-1)4-(-1)5
(3)[(-
3
2
)
3
×(-
4
3
)
2
÷(-
1
2
)-32-(-3)3]×(-14)

(4)
(-2)3×(-1)5-13÷[-(
1
2
)
2
]
0.125×8+[1-32×(-2)]
答案

(1)原式=3-2×25

=3-50

=-47;

(2)原式=-4-(-27)-(-1)

=-4+27+1

=24;

(3)原式=[-

27
8
×
16
9
×(-2)-9-(-27)]×(-1)

=(12-9+27)×(-1)

=-30;

(4)原式=[-8×(-1)-13÷(-

1
4
)]÷{1+[1-9×(-2)}

=(8+52)÷(1+1+18)

=3.

开放性试题

为迎接举世瞩目的第29届北京奥运会的开幕,许多青年在“志愿中国,人文奥运” 号召下,争当志愿者;全国各地也广泛开展“迎奥运、讲文明、树新风”话动

(1)你认为奥运志愿者应该具备哪些基本素质?

                                                                                                                                                              

                                                                                                                                                              

(2)如果你作为奥运的志愿者,看到以下行为,你会怎么做? 

①观众大声喧哗,影响比赛。

                                                                                                                                                              

②外国友人不知道到比赛场地的路。 

                                                                                                                                                                ③你的好友要将瓶装饮料、零食带进比赛场地。

                                                                                                                                                             

单项选择题