




已阅读5页,还剩13页未读, 继续免费阅读
版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
2019年浙教版小学数学三年级上册智慧乐园智力题能力题一、递等式计算(打的要简便)276-85 128+397 65+183+135525-723 1546+288 277+148+323+252聪明题1. 在空格里填入合适的数字,使竖式成立。 2. 用0,1,2,3,4,5,6,7,8,9这10个数字各一次,可组成一个正确的加法竖式。现已写出3个数字,那么这个算式的结果是多少?一、递等式计算(打的要简便)276-85 128+397 65+183+135= 162-85 =128+273 =(65+135)+183= 77 = 401 = 200+183 = 383525-723 1546+288 277+148+323+252= 525-216 = 924+288 =(277+323)+(148+252)= 309 = 1212 = 600+400 =1000聪明题首先根据十位上8+5得到4可知,个位有一个进位,所以,个位的空格中必定是9;再根据百位上两个数相加,再加一个进位后得到9,并有进位可知,百位两个空格中都是9;结果中的千位只能是1。1. 首先,结果中的千位必定为1;第二,百位上第一个数至少是7,最多是9;如为7,那么,结果中的百位为0,并十位要有进位;由此第一个数的十位可以填6,第二个数的个位填9;如为9,显然不行。所以,结果只能如左图2. 昨天我们说到了加法简便运算的时候,可以先找好朋友,手拉手,凑整再计算。其实找好朋友的“秘诀”就是看尾数哦!1和9,2和8,3和7大家都懂的!不如再来做几道吧! 168+253+532 358+127+142+73 825+436+175+64乘法里是不是也有好朋友呢? 用这些好朋友试试下面这三道题吧! 乘法中的“好朋友” (1) 4752 (2) 2594 (3) 812125聪明题 这4个里所填的4个数字总和是多少?有好办法吗?这6个中的数字的总和是多少?168+253+532 358+127+142+73 825+436+175+64=(168+532)+253 =(358+142)+(127+73) =(825+175)+(436+64)= 700+253 = 500+200 = 1000+500= 953 = 700 = 1500 4752 2594 812125= 47(52) =(254)9 =(8125)12= 4710 = 1009 = 100012= 470 = 900 = 1XX两个三位数相加的和比XX小9,说明这两个数都大于990,即是99+99=1991,百位、十位均为9,两个个位数字相加和是11;所以,这6个数字的总和应该是9*4+11=47。个位得9,则个位没有进位,那么,个位两个数字之和就是9,十位两个数字之和是14。所以,被盖住的4个数字总和是14+9=23。 昨天讲了乘法计算中的好朋友,2和5,4和25,8和125,如果好朋友没有直接给出该怎么办呢?没关系,我们可以通过拆数来得到。因为25的好朋友是4, 12中有3个4,所以把12拆成43,再运用乘法结合律,先算254=100,再算1003=300。你学会了吗?2512= 2543= 1003=300例如: 试一试吧! (1)2516 (2)12524 (3)36 25 (4)56125 (5)25123 (6)125165 聪明题 教大家几个比较答案特殊的乘法算式哦!373=111 71113=1001大家能用这两个算式,再用上前面的拆数法,算算下面两道题吗?(答案明天公布哦)937 7778【预告】明天我们讲一个数与5相乘的方法有兴趣的同学可以先去研究研究哦!(1)2516 (2)12524 (3)36 25 = 2544 = 12583 = 9425 = 1004 = 10003 = 9(425) = 400 = 3000 = 9100 = 900(4)56125 (5)25123 (6)125165 = 78125 = 25433 = 125825 = 7(8125) =(254)(33) =(1258)(25) = 71000 = 1009 = 100010 = 7000 = 900 = 10000聪明题937 7778把78拆成136有点难哦!需要同学们掌握熟练的口算!不过看到7、11,就该想到13了呦,他们是好朋友么,嘻嘻! = 3337 = 711136 = 3(337) =(71113)6= 3111 = 10016= 333 = 6006 今天讲个数乘5的方法。我们先来看几道题。85= 40 125=60 185=90 266=130不知大家发现了没有。这些答案去掉0后的部分都是乘数的一半。85= 40 125=60 185=90 265=130 4是8的一半 6是12的一半 9是18的一半 13是26的一半所以一个数乘5的快速口算方法就是【取半添0】 赶紧试试吧!145 365 825 1225225 485 945 2485聪明题 我想同学们可能已经发现了,这个【取半添0】的方式,只能用在乘数是偶数(就是双数)的时候,那如果乘数不是偶数,比如155,该怎么办呢?大家可以先自己举几个例子,研究一下哦!等等再看答案。蹬蹬蹬蹬 答案揭晓,就是【添0取半】,因为没办法先取半么,所以先添个0再取半吧!155= 75 195=95 455=225 695=345 75是150的一半 95是190的一半 225是450的一半 345是690的一半试一试!175 295 635 1455也许你研究出了更好的方法!欢迎你与大家分享哦!(开学大家可以交流一下,如果迫不及待,那么可以把你的方法短信,或者qq告诉我,也可以画下来,拍个照片给我,哈哈)145=70 365=180 825=410 1225=610225=110 485=240 945=470 2485=1240175=85 295=145 635=315 1455=725 今天要讲的比较有趣,是一个数乘11的奇妙算法哦!先来几道两位数的。1 211=132 2 311=253 4 511=495 1 3 2 2 5 3 4 9 5 1+2 2+3 4+5你看懂了吗?这种方法我们简单地说就是【两边一拉,中间相加】,试试吧3511 2711 4211 6111 如果是三位数或者多位数,也一样哦1 2 311=1353 1 2 4 511=13695 1 3 5 3 1 3 6 9 5 1+2 2+3 1+2 4+5 2+4很神奇吧(*_*) 嘻嘻 赶快试一试,不然会忘记的 13511 24311 72511 61811【小提示】其实这个方法很好用,但这里说的不是很完整,还有进位的情况没有说(因为画图实在麻烦,而且怕大家看不懂哦),开学后如果有时间会再讲的哦聪明题 今天的聪明题来一道之前学的和倍问题的题!如果做不出来,就画个线段图吧三块布共长220米,黄布长是红布的3倍,蓝布长是黄布的2倍,红布长几米?哈哈,【两边一拉,中间相加】的方法你学会了吗?3511=385 2711=297 4211=462 6111=67113511=1485 24311=2673 72511=7975 61811=6798聪明题 三块布共长220米,黄布长是红布的3倍,蓝布长是黄布的2倍,红布长几米?先来画个图220米红布黄布蓝布看出来了么?把红布长看成1份,黄布有这样的3份,蓝布有这样的6份,三种布一共是1+3+6=10(份),所以每份长22010=22(米),所以红布长22米。10月7日天天练 今天简简单单,做几道题吧!要仔细哦,能简便的要简便。256108 936+36 194+288+30695+5137 411832 563+433+3聪明题 继续和倍问题!小提醒,画图是个不错的方法学校买了足球和排球共用去了180元,其中买足球的钱比买篮球的钱的3倍还多20元,买足球用去多少元?10月7日天天练答案256108 936+36 194+288+306= 150108 = 324+36 = 482+306= 42 = 360 = 788这道题还有简便方法哦!936+36= 36(9+1)= 3610= 360936可以看做是9个36相加,再加1个36,不就是10个36了吗?你看明白了吗?这道题还能这样算哦!194+288+306=(194+306)+288= 500+288= 788运用的是加法交换律和结合律95+5137 411832 563+433+3 =95+685 = 472-32 = 168+129+3 =780 = 440 = 300这道题有些难哦!411832= 411848= 4(118-8)= 4110= 440这里可以把32拆成48,因为两组算式中都有4,所以可以写成4(118-8) 来计算。有意思吧!这道题最神奇!563+433+3=(56+43+1)3= 1003= 300把563看成56个3,433看成43个3,最后还有1个3,一共是(56+43+1)=100个3。可以让计算简单不少吧呵呵另外我们还你能用图形算式来做买篮球的钱用表示,那么足球的钱就是+20(或者3+20)那么根据两种球总价是180,可以列出+20=180 4=180-20 =(180-20)4 = 1604 = 40足球=403+20=140(元)答:买足球用去140元聪明题 学校买了足球和排球共用去了180元,其中买足球的钱比买篮球的钱的3倍还多20元,买足球用去多少元?180元 篮球列成综合算式是(18020)(3+1)=1604=40(元)403+20=140(元)答:买足球用去140元。把买篮球的钱看成1份,足球的钱就有这样的3份还多20元,两种球合起来一共是4份还多20元,如果不算这多出来的20元,应该是4份,而总价也要少20元,也就是180-20=160,那么每份就是1604=40(元)也就是买篮球的价格,那买足球的就是403+20=140 或者180-40=140元20元 足球10月8日天天练 最近简便计算做得多,今天回顾一下二年级时学习的简便计算。还记得【多加要减,多减要加】吗?368+299 725+198 9+99+999808699 1052999 40597聪明题聪聪有25支铅笔,佳佳有35支铅笔,佳佳给聪聪几支后,聪聪的支数是佳佳的2倍?368+299 725+198 9+99+999= 368+300-1 = 725+200-2 =10+100+1000-3= 668-1 = 925-2 =1110-3= 667 = 923 = 1107808699 1052999 40597= 808-700+1 = 1052-1000+1 = 405-100+3= 108+1 = 52+1 = 305+3= 109 = 53 = 308聪明题聪聪有25支铅笔,佳佳有35支铅笔,佳佳给聪聪几支后,聪聪的支数是佳佳的2倍?方法一不管佳佳给聪聪几支,两人铅笔的总数是不变的,也就是25+35=60(支)最后,聪聪的支数是佳佳的2倍,也就是如下图60支 佳佳聪聪显然,如果把佳佳的支数看成1份,聪聪就有这样的2份,两人一共有3份共60支,所以每份是60(2+1)=20(支) 所以最后佳佳有20枝,而聪聪有202=40支。比较佳佳原来的35支,少了35-20=15(支),而聪聪多了40-25=15(支)。所以佳佳给聪聪15支。方法二假设佳佳给了聪聪支后,聪聪的支数就是25+,而佳佳的支数是35,并且聪聪是佳佳的2倍。就是 25+=(35)2 其中表示相同的数。尝试后可得=15 昨天的练习,你做的怎么样呢?不妨再挑战更难一些的吧!记得把学过的本领都拿出来哦!99+98+97+96 998+996+994+992+990-xx1000-99-97-95 123-99+1234-999+12345-9999聪明题三堆苹果共有130个,第二堆的苹果数是第一堆的3倍,第三堆的苹果数是第二堆的2倍多10个,问三堆苹果各有多少个?99+98+97+96 998+996+994+992+990-xx= 1004-(1+2+3+4) = 10005-(2+4+6+8+10)-xx= 400-10 = 5000-30-xx= 390 = 4970-XX+1 = 2970+1 =29711000-99-97-95 123-99+1234-999+12345-9999= 1000-1003+(1+3+5) =(123-100+1)+(1234-1000+1)+(12345-10000+1)= 1000-300+9 = 24+235+2346= 700+9 =(24+2346)+235= 709 = 2370+235 = 2605聪明题三堆苹果共有130个,第二堆的苹果数是第一堆的3倍,第三堆的苹果数是第二堆的2倍多10个,问三堆苹果各有多少个?130个 第一堆第二堆第三堆10个 列成综合算式是(13010)(1+3+6) 第一堆:121=12(个)=12010 第二堆:123=36(个)=12(个) 第三堆:126+10=82(个)或362+10=82(个)答:第一堆有12个,第二堆有36个,第三堆有82个苹果。先把多余的10个去掉,即130-10=120个。从图上可以看出,一共(1+3+6)=10份,共120个。所以每份就是12010=12(个);第一堆:121=12(个)第二堆:123=36(个)第三堆:126+10=82(个)或362+10=82(个)附送:学校 班级 姓名 学号 装 订 线 内 不 得 答 题xx第二学期六 年 级 英 语 模拟试题(时间:70分钟)( ) 12. A. This watch is not new. B.This book is too old. ( )13. A. Cheetahs run the fastest. B. Cheetahs run faster than most animals.( ) 14. A.I go home by train. B. I go home by bus.( ) 15. A.We liked Wutong Mountain. B. We hiked at Wutong Moutain.iv. 听录音,根据问句选择最佳答语。(每小题念两遍,共5小题,每小题1分)( ) 16. A. Yes , you should . B. No , you shouldnt . C . Yes , I should .( ) 17. A. They clean the street . B. They look after animals . C. They put out the fire .( ) 18. A. Its blue . B. Its 50 yuan . C. Its big .( ) 19. A. Im having breakfast . B. I was having breakfast . C. She was having breakfast .( ) 20. A. My favourite colour is green . B. My favourite season is spring .C My favourite sport is running .v. 听录音,根据对话选择最佳答案。(每小题念两遍,共5小题,每小题1分)( ) 21. What does Pat do when she meets older people.A.She shakes hands with themB.She says “hello” to them. C. She hugs them.( ) 22. Whats Bobs favourite animals? A. cheetahs B.sharksC. turtles题号IIIIIIIVVVIVIIVIII合计满分3512515105108100得分( ) 12. A. This watch is not new. B.This book is too old. ( )13. A. Cheetahs run the fastest. B. Cheetahs run faster than most animals.( ) 14. A.I go home by train. B. I go home by bus.( ) 15. A.We liked Wutong Mountain. B. We hiked at Wutong Moutain.iv. 听录音,根据问句选择最佳答语。(每小题念两遍,共5小题,每小题1分)( ) 16. A. Yes , you should . B. No , you shouldnt . C . Yes , I should .( ) 17. A. They clean the street . B. They look after animals . C. They put out the fire .( ) 18. A. Its blue . B. Its 50 yuan . C. Its big .( ) 19. A. Im having breakfast . B. I was having breakfast . C. She was having breakfast .( ) 20. A. My favourite colour is green . B. My favourite season is spring .C My favourite sport is running .v. 听录音,根据对话选择最佳答案。(每小题念两遍,共5小题,每小题1分)( ) 21. What does Pat do when she meets older people.A.She shakes hands with themB.She says “hello” to them. C. She hugs them.( ) 22. Whats Bobs favourite animals? A. cheetahs B.sharksC. turtles( ) 23. What was Tim doing ? A. He is getting a haircut B.He was getting a haircut. C. He was doing exercise.( ) 24. Does Jim like the notebook? A. Yes, he does. B.No, he doesnt.C. He likes the watch.( ) 25. Where are Tom and Betty?A. They are in the supermaket. B. They are in the park. C. They are at home.vi. 听录音, 根据短文内容选择最佳答案。(短文念两遍,共5小题,每小题1分)( ) 26 . Wang Wei .A.is a workerB.is a truck driverC. is a teacher( ) 27. On Saturday and Sunday Wang Wei . A. doesnt go to work B.goes to the farm.C. reads books ( )28. He cooks supper . A. at home B. in his truck C. on the farm( )29. He is years old . A. 20 B. 25 C. 23 ( )30. Does he go to bed at about ten?A.Yes he does. B. No, he wasnt. C. Sorry, I dont know.vii. 听录音, 作笔记,每空一词。(短文念两遍,共5小题, 每小题1分)NameAgeClassFavorite hobbyFavorite colour31._32._33._34._ 35._ II选择填空(12%)(共12小题,每小题1分)( ) 36. _ Saturday morning , I went to the hair salon .A .In B. On . C. With D. When ( ) 37.You can see _ better than me . A. more B. too . C. much . D the most ( ) 38. I _ playing football when my father was at home . A. am B. are . C . were . D. was ( ) 39. How about _ a rest ? The girl seems very tired .A. have B . has C. having D . still ( ) 40. When you meet an old man , you should _hands with them .A. shake B. shook C. shaking . D. wave ( ) 41. Yesterday we _ some photos near the mountain.A. take B. taking . C. takes . D took ( ) 42. I want to buy _ expensive watch . It has astronauts on it .A. a B. an. C . the . D. / ( ) 43 . Mandy cant run fast . Pat cant run fast, _ .A also B. too C. either . D. neither ( ) 44. There _ no highway 50 years ago .A is B. are . C. were . D was ( ) 45 . Pat usually _ her homework at 10:00.A. finishes B. finish C. finishs D. finished ( ) 46. A fire can happen when youre sleeping _ home.A.in B.atC. to D. for( ) 47. When we see a fire, we should call _ A. 119 B. 120 C. 911 D. 110III. 完形填空(5%)选择最佳答案完成短文。 Whales live the (48)_. Elephants can live for 70 years. Turtles and people can live longersometimes more than 100 yearsbut whales can live for (49)_ 200 years! Cheetahs run (50)_ than any other (51)_. They can run 76 km an hour or even faster. They also sleep a lot. Sometimes they sleep 16 hours a(52) _.( ) 48. A. long B. longer C. longest D. the long( ) 49 A. more B. more than C. than D. most than( ) 50 A. faster B fastest C. the faster D. the fastest( )51 A. animals B. animal C. people D. clever( )52 A. week B.year C. day D. month IV. 阅读理解(15%)(共15小题,每小题1分)i. 判断下列句子是否符合短文内容,符合的用“A”表示;不符合的用“B”表示。AToday is Sunday. It is a fine day. The sky is blue. Mr. White is with his family.There are four people in his family. They are Mr. White, Mrs. White, May and Jim.They are walking on the bridge(桥). There are some boats on the river(江、河). Mr. and Mrs. White are looking at them. May is not looking at the boats. She is looking at a big ship. Jim is looking at the birds in the sky. They have a good time.( ) 53. Its cloudy today.( ) 54. Mr. White, Mrs. White and their children are on the bridge.( ) 55. Father and mother are looking at the boats on the river.( ) 56. May is looking at the boats, too. ( ) 57. They are happy today.ii. 根据短文内容,选择最佳答案。B JackisateacherofEnglish.Heisnotyoung,butheisnotold.Hehasaroundfaceandabignose.Heistall.Therearefiftystudentsinhisclass.Theyalllikehim.Nowitsintheafternoon.Look,somestudentsareworkingintheclassroom.Jackisthere, too.HeshelpingthemtostudyEnglish.Heisagoodteacher,Andheisagoodfriendofthemall.() 58.WhatdoseJackdo?A.Heisaworker.B.Hesateacher.C.Hesadoctor.D.Hesa nurse.() 59.Whatdosehelooklike?A. HehasaroundfaceandabignoseandheistallB. Heisshortandfat.C. Hehasasmallnose.D. Hehasalongface.() 60.Howmanystudentsarethereinhisclass?A. Thererefifteenstudentsinhisclass.B. Thererefifteen. C. Hehasfifteen.D. Therearefiftyinit.()61、Whatarethestudentsdoingintheclassroom?A.Theyareplayingthere.B.Theyredoingtheirlessons. C.Theyrehelpingtheirteacher. D. TheyregoodfriendsofJack.( ) 62. What does Jack teach? A. English B. Chinese C. Maths. C. Music.CIn England, people dont usually talk much. You can go on a bus, or in a train, and everyone sits looking out of the window. Often they read. They read books and papers, but they dont talk much. When you meet English people, they often talk about one thing, the weather. So when you meet somebody in England, you can say, “Nice weather for the time of year!” “But it was a little cold yesterday,” somebody may answer. “But it got warmer later,” you can say.Talk like this, and the English will think, “How friendly you are!”( ) 63. English people often _ on a bus . A. talk much B. talk about C. read newspapers( ) 64. When you meet English people, talk like this: A. How do you do? B. How are you? C. Nice weather!( ) 65. If you talk with the English people about the weather, they will think _ .A. you are friendly B. you are right C. you are English ( ) 66. English people always hope the weather will get _ .A. better B. warmer C. colder( ) 67. People in _ dont ususlly talk much. A. the UK B. the USA. C. the UNV. 完成句子(10) 根据中文内容,完成英文句子,每空填一个单词。(共5小题,每空1分。)68. 1.当你遇见年纪较大的人时,你应该和他们握手。 When you meet older people, you should _ hands with them.69. 我离开房间,我没有拿东西。 I left my room. I didnt _ my things.70.
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 2025年环保产业行业绿色技术创新与市场前景研究报告
- 2025年物联网技术应用场景与发展前景研究报告
- 2025年区块链行业技术应用前景展望研究报告
- 商场员工安全培训资料课件
- 2025年生物医药行业创新药物研发与市场前景分析报告
- 2025年运输行业无人驾驶技术发展前景研究报告
- 山西省2025山西长治医学院招聘博士研究生40人笔试历年参考题库附带答案详解
- 商场业主管理培训课件
- 夏县2025山西运城市夏县事业单位引进高素质青年人才25人笔试历年参考题库附带答案详解
- 国家事业单位招聘2025中国农业科学院作物科学研究所科研管理处招聘1人笔试历年参考题库附带答案详解
- 新入职教师法律法规培训
- 数字经济与就业
- 2024年-2025年司法考试真题及复习资料解析
- 幼儿园护学岗职责
- 国开电大《组织行为学》形考任务1-4
- 施工安全生产风险分级管控和隐患排查治理双重预防机制建设实施方案
- 精细化工技术-大学专业介绍
- 餐饮财务问题的研究报告
- 慢性疾病运动干预中心服务要求(征求意见稿)
- 林同炎与美洲银行大厦
- (正式版)SH∕T 3548-2024 石油化工涂料防腐蚀工程施工及验收规范
评论
0/150
提交评论