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2014年七年级期末试题分类——科学计数法和近似数——范朝辉

2014年七年级期末试题分类——科学计数法和近似数——范朝辉
2014年七年级期末试题分类——科学计数法和近似数——范朝辉

二、科学计数法和近似数:

1、(昌平14年期末)2.中共十八届三中全会于2013年11月9日到11月12日在北京召开.截止到2013年11月28日,某网站关于此次会议热点问题讨论的相关微博约1090000条. 请将1090000用科学记数法表示为

A . 0.109×106

B . 1.09×106

C . 1.09×105

D . 10.9×104

2、(门头沟14年期末)1. 门头沟区定位为生态涵养区之后,环境发生巨大变化,吸引了全

国各地的旅游爱好者,据门头沟旅游局统计,2014年十一黄金周期间,门头沟区接待游客超过29万人,实现旅游收入32 000 000元. 将32 000 000用科学记数法表示应为(

A. 80.3210?

B. 73.210?

C. 63210?

D. 63.210? 3、(2014年门头沟期末)4. 0.03095精确到千分位的近似值是 . 4、(2014年平谷期末)2.今年我国粮食生产首次实现了建国以来的“十连增”,全年粮食产量突破12000亿斤.将1 200 000 000 000用科学记数法表示为

A .111210?

B .111.210?

C .121.210?

D .130.1210?

5、(2014石景山期末)4.长城总长约为6700000米,用科学计数法表示为 ( )

A .6.7510?米

B .6.7610?米

C .6.7710?米

D .6.7810?米

6、(2014年延庆期末)2.近年来,延庆着力打造中国自行车骑游第一大县,推出了8大骑游区域、11条精品骑游线路,涵盖妫河生态走廊、百里山水画廊等景区景点。同时,县内很多骑游爱好者还自发成立了骑行俱乐部或车队,促进了延庆骑游运动发展,在延庆骑游人数近20000人,将20000用科学记数法表示应为

A .2×103

B .20×103

C .2×104

D .0.2×105

7、(2014年怀柔期末)2. 2013年12月14日,嫦娥三号平稳落月,中国首次地外天体软着陆成功,成为世界上第三个实现地外天体软着陆的国家,这一壮举激发了无数青少年探索天文奥秘的热情.某同学查阅到月球赤道直径34760000米、两极直径34720000米,其中34760000用科学记数法可表示为( )

A. 634.7610?

B. 73.47610?

C. 83.47610?

D. 93.47610?

8、(2014年通州期末)16. 2013年12月2日凌晨1点30分,“嫦娥三号”探测器在西昌卫星发射中心发射,展开奔月之旅. 本次发射的“嫦娥三号”重量约为3780公斤. 将数3780用科学记数法表示为____________.

9、(2014年西城期末)2.根据北京市旅游委发布的统计数字显示,2013年中秋小长假,园博园成为旅游新热点,三天共接待游客约184 000人,接待量位居全市各售票景区首位,

将184 000用科学记数法表示应为( ).

A .41.8410?

B .51.8410?

C .318.410?

D .418.410?

10、(2014年西城期末)11.用四舍五入法将 3.657取近似数并精确到0.01,得到的值是 .

11、(2014年丰台期末)2.“厉行勤俭节约,反对铺张浪费”势在必行.最新统计数据显示,中国每年浪费粮食总量大约是210 000 000人一年的口粮,将210 000 000用科学记数法表示应为

A .71021?

B .7101.2?

C .8101.2?

D .90.2110?

11、(2014年朝阳期末)3. 为期半年的北京园博会于2013年11月18日圆满落幕,统计显示,自5月18日开幕以来,北京园博会共接待游客6100000余人次,单日最高游客接待量106000人次,均创历届园博会之最.若将106000用科学记数法表示结果为

A . 1.06×410

B . 1.06×510

C . 0.106×610

D . 10.6×4

10

12、(2014年东城期末)3. 微信是现代社会人的一种生活方式,截止2013年8月,微信用户已超过4亿,目前还约以每天1 600 000用户人数在增长,将1 600 000用科学记数法表示为

A . 70.1610?

B . 61.610?

C . 71.610?

D . 51610?

13、(2014年顺义期末)2.火星和地球的距离约为34 000 000千米,用科学记数法表示34 000 000,应记作( )

A .80.3410?

B .63.410?

C .63410?

D .7

3.410? 14、(2014年密云期末)2. 据统计,2005年我国国内生产总值约为166700亿元,这个国

内生产总值用科学记数法可表示为 ( )

A.1.667×510 亿元

B.1.667×610 亿元

C.16.67×410 亿元

D.1667×210 亿元

15、(2014年海淀期末)4.据测算,如果全国每年减少10%的过度包装纸用量,那么可减排二氧化碳3 120 000吨.把数3 120 000用科学记数法表示为

A .53.1210?

B .70.31210?

C .531.210?

D .6

3.1210?

16、(2014年燕山期末)2.北京时间12月2日凌晨2点17分,在西昌卫星发射中心,“嫦娥三号”月球探测器由“长征三号乙”运载火箭成功送入太空.此次火箭的起飞质量约为456000公斤,将456000用科学记数法表示应为

A .0.456×106

B .4.56×105

C .45.6×104

D .456×103

17、(2014年燕山期末)12.用四舍五入法将4.036取近似数并精确到0.01,得到的值

是.

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