Math topic中文
Standard form
use of standard form , where is an integer, and
Practice questions
- 1近似数万精确到___位,用科学记数法表示:___.
- 2A piece of wood which was 50 cm long, was in the shape of a uniform cylinder. A prism is cut out from the wood such that…
- 3中国是严重缺水的国家之一,人均淡水资源为世界人均水平的四分之一,所以我们要节约用水.若每人每天浪费水升,则马鞍山全市万人每天浪费的水的总升数,用科学记数法表示为 A. …
- 4Mr Johnson has a plot of field that grows dandelion plants. An average of 70 dandelion plants grow on each square metre.…
- 5据报道,发射“天宫一号”的“长征二号”火箭的起飞质量约为数字用科学记数法表示为 A. B. C. …
- 6The approximate mass of the earth is kg. How many times is the earth heavier than an average male…
- 7The volume of an Olympic size swimming pool is 660 000 gallons. 1 gallon is approximately 3790 cm^3. Convert 660 000 gal…
- 8A cargo ship has an average fuel consumption of 0.000 892 kilometres per litre. Write this consumption in litres per kil…
- 9国家统计局统计,年月份,全国规模以上工业企业实现利润亿元,比年月份增长,延续了年下半年以来较快增长的良好态势.其中…
- 10年月日,神舟十四号搭载三名航天员顺利升空,它的飞行任务是我国空间站建造阶段第一次载人飞行任务,任务期间将全面完成以天和核心舱、问天实验舱和梦天实验舱为基本构型的天宫空间站建造,建成国家太空实验室,其中支持…
- 11第二届梧州特色产品博览会期间,三天内签订的合同金额达元,其中用科学记数法表示为 A. B. C. …
- 12由四舍五入得到的地球半径约为;精确到 A. B. C. D.
- 13将下列用科学记数法表示的数还原成原数. …
- 14今年参加恩施州初中毕业学业考试的考生约有人,请将用科学记数法表示为 A. B. C. D. …
- 15今年月份,某市经济开发区完成出口美元,将这个数据用科学记数法表示应为 A. B. C. …
- 16十九大报告指出:“贫困发生率从百分之十点二下降到百分之四以下.教育事业全面发展,中西部和农村教育明显加强.就业状况持续改善,城镇新增就业率年均一千三百万人以上.城乡居民收入增速超过经济增速,中等收入群体持续扩大.”其中城镇新增就业年均一千三…
- 17The table shows the currency exchange rate between Singapore dollars ($) and Thai Baht (THB) at a money changer. Before…
- 18年是贵州省发展进程中极不平凡的一年,在以习总书记同志为核心的党中央坚强领导下,在贵州省委的直接领导下,我省的脱贫攻坚工作交出了满意的答卷,共有万人通过易地扶贫搬迁搬出了大山,从根本上改变了生存环境和发展条件.请…
- 19Calculate Write your answer correct to 4 significant fig…
- 20稀士元素具有独特的性质和广泛的应用,我国稀土资源的总储量约为吨,用科学记数法表示为 ___ .
- 21The CoV (coronavirus) is circular in shape with a diameter of approximately 0.00014 mm. Express 0.00014 in standard form…
- 22Express the ratio kg : 450 g : g in its simplest form. Answer ... : ... : ...
- 23The diagram shows a semicircle, centre O, radius 16 cm. Show that angle AOB = 1.287 radians, correct to 3 decimal places…
- 24As of 2023, the population of Singapore is approximately 5.64 million and the population of Malaysia is approximately 33…
- 25用科学记数法表示下列各数: .
- 26据报道,年汕头市固定资产投资总额、社会消费品零售总额均突破亿元,将亿用科学记数法可表示为 A. B. C. …
- 27如果用科学记数法得到的数是,那么原来的数是 A. B. C. D.
- 28近似数精确到___位.
- 29年“双十一”淘宝销售额约为亿元.将数字用科学记数法表示为 A. B. C. …
- 30在市一次扶贫捐助活动中,共收到捐款元.将用科学记数法表示为 A. B. C. …
- 31The table shows the total electricity consumption in Singapore over three years. In 2021, the electricity consumed by ho…
- 32The mass of Jupiter is approximately 1.90×10^27 kg. The mass of Earth is approximately 5.97×10^24 kg. Giving your answer…
- 33年月日时分我国发射了神舟十三号载人飞船,利用长征二号运载火箭将神舟十三号载人飞船送入近地点高度米的近地轨道,并与天和核心舱进行交会对接.将…
- 34据统计年陕西省达到万亿元,实现持续进位,上升至全国第名,人均位居全国第位.请你将万亿元用科学记数法表示精确到…
- 35某种细胞的直径是米,将用科学计数法表示为( ) A. B. C. D. …
- 36衢州市“十二五”规划纲要指出,力争到年,全市农民人均年纯收入超元,数用科学记数法可以表示为 A. B. C. …
- 37年我国大学毕业生约有万人,数据万用科学记数法表示为 A. B. C. …
- 38用科学记数法表示,正确的是 A. B. C. …
- 39Simplify , where , leaving your answer in terms of and in standard form…
- 40A manufacturing company produces electronic components for various devices. They are analyzing the production data for t…
- 41精确到 ___位.
- 42某农科院要在一块长,宽的实验基地上培育新品种粮食,现培育每种新品种,需要边长为的正方形实验田,则这块实验基地…
- 43The approximate mass of the earth is kg. How many times is the earth heavier than a sumo wrestler…
- 44The Tan family bought a furniture, priced at 0.3 million JPY, from a furniture maker in Japan last year in June 2020 fro…
- 45用科学计数法表示:___.
- 46据统计,到年末我国现有人口约为人,把用科学记数法表示为 ___ .
- 47深圳市卫健委日称,截至月日时,全市指定接种门诊家,累计接种人.将用科学记数法表示为 A. …
- 48有理数用科学记数法表示为 A. B. C. D.
- 49During nuclear fusion, it is observed that when two hydrogen atoms are fused together to form one helium atom, there is…
- 50刚刚闭幕不久的北京冬奥会曾引起人们的高度关注,创新的数字平台合作带动广泛参与,据冬奥会大数据统计,粉丝在奥林匹克网站上给他们支持的奥运选手共发出万条虚拟助威,万用科学记数法表示为 A.…
- 51杨絮纤维的直径约为,“”用科学计数法可表示为___.
- 52型口罩可以保护在颗粒物浓度很高的空间中工作的人不被颗粒物侵害,也可以帮助人们预防传染病.“”表示此类型的口罩能过滤空气中的粒径约为的非油性颗粒,其中…
- 53The thickness of a layer of ice in a water body is . Write in standard form. Answer ... The…
- 54In 2010, the population of the United Kingdom was . In the same year the population of Singapore was …
- 55In the year 2022, it was recorded that the average amount of waste generated in Singapore daily was 20.3 thousand tonnes…
- 56The speed of gamma rays in air is approximately cm/s. Express this speed in metres per second. Giv…
- 57Calculate , giving your answer in standard form. Answer ...
- 58The employees of a company are offered an increase in salary. Employees have the option to choose from either Scheme A o…
- 59纳米技术是继年扫描隧道显微镜发明而诞生的,纳米,又叫奈米,毫微米,纳米等于毫米的百万分之一,某种原子的直径约为纳米,用科学记数法可表示为 A. …
- 60已知空气的单位体积质量是克厘米,则用科学记数法表示为 ___ 克厘米保留三个有效数字.