错题集
四年级上册数学错题集
四年级上册数学错题集一、大数的认识1. 题目:读数:300005000,错误答案:三亿零五千。
解析:读这个数时,从高位读起,亿级是3,读作三亿;万级都是0,只读一个零;个级是5000,读作五千。
正确答案应该是三亿零五千。
这里容易出错的地方在于万级的0的读法,每级末尾不管有几个0都不读,其他数位上有一个0或连续几个0,都只读一个零。
2. 题目:写数:三十亿零三百,错误答案:300000300。
解析:三十亿零三百,十亿位是3,百位是3,其他数位是0,正确写法应该是3000000300。
错误原因是没有正确理解每个数位上的数字,导致少写了0。
二、公顷和平方千米1. 题目:1公顷 =()平方米,错误答案:100。
解析:因为1公顷是边长为100米的正方形的面积,根据正方形面积 = 边长×边长,100×100 = 10000平方米,所以1公顷 = 10000平方米。
这里错误是对公顷和平方米的换算关系没有牢记。
2. 题目:一个长方形果园长500米,宽200米,这个果园的面积是多少公顷?错误答案:直接用500×200 = 100000(平方米),回答100000公顷。
解析:首先算出果园面积为500×200 = 100000平方米,然后将平方米换算成公顷,因为1公顷 = 10000平方米,所以100000平方米=10公顷。
错误在于没有进行单位换算。
三、角的度量1. 题目:用量角器量角时,角的一边与量角器内圈0°刻度线重合,另一边指向120°,这个角是()度,错误答案:120°。
解析:当角的一边与量角器内圈0°刻度线重合时,另一边指向120°,这个角应该是60°。
因为内圈刻度是按照逆时针方向读数的,而我们通常用量角器量角时,按照顺时针方向读数是外圈刻度,这里容易混淆内圈和外圈刻度的读数方法。
2. 题目:一个平角分成两个角,其中一个角是锐角,另一个角是()角,错误答案:锐角。
错题集
禁止机动车通行:表示禁止某种机动车通行。
此标志设在禁止机动车通行的路段入口处。
不要被标志下边的学校误导,题目问的是标志的意思,警告标志注意儿童,用以警告车辆驾驶人减速慢行,注意儿童。
设在小学、幼儿园、少年宫等儿童经常出入地点前适当位置。
很形象的追尾事故现场,警告标志事故易发路段,此标志设在交通事故易发路段以前适当位置。
靠左侧道路行驶,表示只准一切车辆靠左侧道路行驶。
此标志设在车辆必须靠左侧行驶的路口以前适当位置。
此标志为错车道,指示前方设有避让来车的处所。
指示高速公路两个行驶方向的目的地。
此标志是救援电话,用于指示救援电话号码。
紧急电话只有一个电话,没有其他字样。
可变车道的指示,是对应红绿灯的指示这么长的简易停车应该是公交车专用停车下客上车的,小车不能在此停车。
虚线短时停车,实线长时停车。
题干已经提示是虚线,所以题目描述错误。
6/170. 驾驶机动车遇到这种特殊情况怎样行驶?A. 靠右侧减速让行B. 保持原行驶路线C. 靠左侧减速让行D. 加速靠左侧让行校车在同方向只有一条机动车道的道路上停靠时,后方车辆应当停车等待,不得超越。
校车在同方向有两条以上机动车道的道路上停靠时,校车停靠车道后方和相邻机动车道上的机动车应当停车等待,其他机动车道上的机动车应当减速通过。
校车后方停车等待的机动车不得鸣喇叭或者使用灯光催促校车。
39/170. 驾驶机动车遇到校车在道路右侧停车上下学生时,应注意什么?A. 同向只有一条机动车道,后方机动车应当停车等待B. 同向有三条机动车道,中间车道后方机动车应当停车等待C. 同向有三条机动车道,左侧车道后方机动车可以减速通过64/170. 关于超车,以下说法正确的是什么?A. 完成超车后并回行车道要开启右转向灯B. 长时间鸣喇叭警示被超车辆驾驶人C. 超车前提前开启左转向灯,提醒前方被超车辆驾驶人D. 切换远、近光灯提醒前方被超车辆驾驶人68/170. 如图所示,驾驶机动车遇到这种情况时,以下做法正确的是什么?A. 放慢车速,缓缓绕过B. 鸣喇叭示意该车让路C. 保持原车速绕行D. 立即停车等待,直至该车离开模拟考试>科目四>章节练习69/170. 如图所示,驾驶机动车遇到这种情况时,以下做法正确的是什么?A. 鸣喇叭驱赶动物B. 与动物保持较远距离C. 下车驱赶动物D. 停车等待动物穿过71/170. 如何为特种车辆让路?A. 向前车鸣喇叭,自己在特种车辆前开路B. 向左减速让路,直到紧急车辆过去C. 立即停车,即使你在交叉口也是如此D. 向右减速让路,直到紧急车辆过去74/170. 驾驶汽车频繁变更车道的危害以下选项错误的是?A. 影响正常通行B. 易引发交通事故C. 易导致爆胎D. 扰乱交通秩序80/170. 驾驶机动车在下坡行驶过程中行车制动器失效,以下做法正确的是什么?A. 驶入紧急避险车道B. 使用发动机制动C. 使用驻车制动器制动D. 必要时,可用车体刮擦路边障碍物减速102/170. 驾驶机动车行经驼峰桥会车时,以下做法正确的是什么?A. 抢行通过B. 靠右通行C. 鸣喇叭示意D. 降低车速117/170. 驾驶机动车在山区上坡路段行驶,以下做法正确的是什么?A. 时刻注意下行车辆B. 应尽量避免换挡C. 应尽量匀速前进D. 应选择高速挡118/170. 驾驶机动车在山区道路上坡路段接近坡顶时,超车存在风险,以下说法正确的是什么?A. 接近坡顶时视线受阻,无法观察对向来车情况B. 接近坡顶时车速较慢C. 接近坡顶时视线受阻,无法观察坡顶之后道路走向D. 接近坡顶时视线受阻,无法观察坡顶之后是否有障碍物120/170. 夜间驾驶机动车会车时,对方一直使用远光灯,以下做法正确的是什么?A. 不停变换远近光灯以及鸣喇叭提醒对方B. 降低车速,靠右行驶C. 视线适当右移,避免直视灯光D. 变换远光灯行驶129/170. 如图所示,驾驶机动车跟随前车右转弯时,应当注意的是什么?A. 前面的车可能停下B. 右侧视野盲区内可能有自行车直行C. 行人可能突然进入本车前的人行横道D. 直行的黄色车辆可能影响本车右转弯159/170. 如图所示,驾驶机动车遇到这种情形时,应减速在其后保持安全距离通过路口。
和差倍错题集
和差倍及排队问题集1.阿呆和阿瓜共有56根玉米。
如果阿呆给阿瓜5根,则阿呆比阿瓜少2根。
请问原来阿呆和阿瓜各有多少根2.登月行动地面控制室的成员由两组专家组成,两组专家共有125名。
原来第一组专家人数太多,所以从第一组调了20名专家到第二组,即使这样第一组仍比第二组多5名。
原来第一组有多少名专家?3.小高、墨莫和卡莉娅共有40块糖,小高的糖是卡莉娅的2倍,墨莫的糖和卡莉娅一样多,请问卡莉娅有几块糖?4.羊村里住了一些羊和狼,羊的数量比狼的5倍多2只,且羊比狼多42只。
请问:羊村里羊和狼分别有多少只?5.有两盒块数一样的糖,第一盒放入8块,第二盒拿走18块,这是第一盒的糖是第二盒的3倍,这两盒原来各有多少块糖?6.有两款价格一样的大小冰箱,夏季大促销,大冰箱的价格下降了100元,小冰箱的价格下降了400元,这是大冰箱的价格是小冰箱的2倍,请问:这两款冰箱原来的价格各是多少元"7.阿呆和阿瓜原来的苹果一样多,现在阿呆给阿瓜12个苹果,结果阿瓜的苹果比阿呆的3倍少2个。
两个人原来各有多少个苹果?8.小高和小思分别有一些糖。
原来小高比小思多50颗糖。
小高又买了130颗,小思又买了5颗,这是小高的糖比小思的5倍多7颗。
则原来小高有多少颗糖?9.爷爷的年龄比爸爸的2倍少10岁,爷爷比爸爸大了28岁。
请问:爸爸多少岁?爷爷多少岁?10.姐姐的小红花是妹妹的5倍,如果姐姐给妹妹20朵小红花,则两人就一样多。
请问:原来姐姐有多少朵小红花?11.甲乙两个仓库储存了同样多的电视机,要是从甲仓库调运200台到乙仓库,则乙仓库的存量就比甲仓库2倍少40台。
请问:甲、乙两仓库共有多少台电视机?12.孙悟空、猪八戒、沙僧决定休息一会吃些包子,猪八戒吃的爆字数是孙悟空的2倍,孙悟空吃的包子比沙僧的2倍多6个,他们一共吃了102个褒姒。
请问:猪八戒吃了多少个包子?13.孙悟空、猪八戒、沙僧三人决定进展最后一场"吹气球比赛〞决胜负,1分钟内吹破气球个数最多的人获胜。
数学错题集
一判断对错1、线段是直的,可以量出它的长度。
()2、用一个三角尺的两个锐角拼出的角一定是直角。
()3、角的边变长了,角的大小并没有变。
()4、一副三角尺有两个三角尺。
()5、用一副三角尺可以拼出锐角、直角。
()6、用两副三角尺才能拼出直角和钝角。
()7、三角尺上的两个锐角拼成的角一定是钝角。
()二选一选1、5个1元的硬币大约厚()A. 1厘米B. 1米C. 5厘米2、下面的物体中()的高度接近1米。
A. 台灯B. 写字桌C. 教室的门3、两个乘数都是5,写成乘法算式是()A. 5×5B. 5+5C. 5×24、小房屋,真好看,彩旗挂了有三串,下面不能表示彩旗面数的是()。
A. 4个3B. 3个4C. 4×35、用这把尺子能测量长度()1cm568A. 1cm、5cm、6cm、8cmB. 4cm、5cm、7cmC. 1cm、4cm、5cm、7cmD . 1cm、2cm、3cm、4cm、5cm、7cm三填一填1、下面两个三角尺都有()直角,两个()角,其中右边的这个三角尺上两个锐角()。
2、在里填上合适的数,使得每条线上三个数的和都是50。
3、看图填空×=口诀:4、量一量,蜗牛从第1条线路爬()厘米就回到家。
如果从第2条路回家呢?12家5、数一数,算一算。
===()朵6、数一数,下图一共有()角。
7、地里一共有100个胡萝卜,小白兔第一次运回36个,第二次运回23个,小白兔一共运回了多少个胡萝卜?小白兔打算送给小灰兔50个胡萝卜,地里剩下的胡萝卜还够吗?。
七年级数学试卷错题集
一、选择题1. 错题:3 + 2 × 4 = 20正确答案:3 + 2 × 4 = 11错误原因:未正确运用乘法优先级原则。
2. 错题:8 ÷ 2 + 2 = 7正确答案:8 ÷ 2 + 2 = 6错误原因:未正确运用除法和加法的顺序。
3. 错题:5 × (3 + 2) = 25正确答案:5 × (3 + 2) = 25错误原因:题目本身正确,但误以为题目有误。
4. 错题:0.5 × 0.5 = 0.25正确答案:0.5 × 0.5 = 0.25错误原因:题目本身正确,但误以为题目有误。
5. 错题:(-2) × (-3) = 6正确答案:(-2) × (-3) = 6错误原因:题目本身正确,但误以为题目有误。
二、填空题1. 错题:一个数的3倍加上4等于24,这个数是()正确答案:8错误原因:未正确运用代数方法解方程。
2. 错题:如果a = 5,那么a - 2 =()正确答案:3错误原因:未正确进行变量替换。
3. 错题:一个长方形的长是6厘米,宽是3厘米,它的面积是()正确答案:18平方厘米错误原因:未正确运用长方形面积公式。
4. 错题:一个数的平方根是5,那么这个数是()正确答案:±5错误原因:未考虑平方根的正负。
5. 错题:一个数的倒数是2,那么这个数是()正确答案:1/2错误原因:未正确理解倒数的概念。
三、解答题1. 错题:解方程:2x - 5 = 11正确答案:x = 8错误原因:未正确运用等式性质解方程。
2. 错题:计算:(-3) × 4 + 2 × (-5)正确答案:-14错误原因:未正确运用有理数混合运算规则。
3. 错题:求长方体的体积,长是8厘米,宽是4厘米,高是6厘米。
正确答案:192立方厘米错误原因:未正确运用长方体体积公式。
4. 错题:计算三角形面积,底是10厘米,高是6厘米。
小学数学三年级上册错题集
小学数学三年级上册错题集1、计算:630÷7= 28×3= 70×6= 480÷6-63=50×4= 300÷4= 78×3= 207×7÷9=31×2= 468×2= 7×600= 720-400÷8=36×3= 4×180= 409×8= 300-14×6=100-25×4= ()k g=16t 36t=()k g2、填空题:(1)一块橡皮重3()3)小红家离学校2000米,她每天中午回家吃饭,小红每天上学、回家至少要走米。
3、选择题:(1)算式15×6读作()A、15乘6B、15的6倍C、15个6的和(2)求6个13的和,算式是()A、6+13B、6×13C、6÷134、叛断题:(1)120÷4可读作4除以120。
()(2)由四条边围成的图形不是长方形就是正方形。
()(3)两个相同的长方形拼成的图形一定是长方形。
()(4)一个正方形的边长扩大2倍,周长就会扩大8倍。
()5、解决问题:(1)在学校院墙边种了40棵树,每隔5米种一棵,如果起点和终点都种了一棵,问学校院墙有多长?(2)、苹果每箱16元,梨每箱14元,买4箱苹果和4箱梨分别需要多少钱?(3)4个玩具车的价钱正好和2台小电子琴的价钱相同,已知一台小电子琴的价钱是64元,一个玩具车的价钱是多少元?(4)长方形的周长是200厘米,宽是35厘米,长是多少?(5)一间大会议厅,长是15米,宽是12米,中间铺上地毯,四周留2米宽的地板,地毯的周长是多少?(6)剪一张长为58厘米,宽为28厘米的长方形纸,然后在这张纸上剪下一个最大的正方形,这个正方形的周长是多少厘米?剩余部分的周长是多少厘米?(7)求拼成图形的周长。
有两个相同的长方形,可以拼成一个长方形和一个正方形。
错题集(精简版)
34、点火开关在ON位置,车用电器不能使用。
ⅹ A、正确√ B、错误100、机动车仪表板上(如图所示)亮表示什么?ⅹ A、行车制动系统出现故障√ B、驻车制动器处于制动状态C、防抱死制动系统出现故障D、驻车制动器处于解除状态试题:造成交通事故后逃逸且构成犯罪的驾驶人,将吊销驾驶证且终生不得重新取得驾驶证。
答案:正确吊销机动车证的为二年,撤消机动车证的为三年,以醉酒吊销五年,因逃跑而吊销是终身,叫“吊二撤三醉五逃终身”试题:在这条公路上行驶的最高速度不能超过多少?A.30公里/小时B.40公里/小时C.50公里/小时D.70公里/小时答案:D根据《安全法》第四十五条:……在没有限速标志、标线的道路上,机动车不得超过下列最高行驶速度:(一)没有道路中心线的道路,城市道路为每小时30公里,公路为每小时40公里;(二)同方向只有1条机动车道的道路,城市道路为每小时50公里,公路为每小时70公里。
图为公路,所以最高时速为70公里/每小时。
试题:在这条车道行驶的最低车速是多少?A.60公里/小时B.90公里/小时C.100公里/小时D.110公里/小时答案:C同方向有2条车道的,左侧车道的最低车速为每小时100公里;同方向有3条以上车道的,最左侧车道的最低车速为每小时110公里,中间车道的最低车速为每小时90公里。
试题:这个标志是何含义?A.高速公路特殊天气最高速度B.高速公路特殊天气建议速度C.高速公路特殊天气最低速度D.高速公路特殊天气平均速度答案:B黄数字限最高速度,白数字限最低速度,黑数字是建议速度试题:这个标志是何含义?A.交叉路口预告B.车道方向预告C.分道信息预告D.分岔处预告答案:A分向行驶车道边上是虚线,下面没有距离标志。
交叉路口标志就是这个。
是有距离数字的。
试题:这辆在高速公路上临时停放的故障车,警告标志应该设置在车后多远处?A.150米以外B.50~150米C.50~100米D.50米以内答案:A亲们注意了,高速公路是150米以外,道路是50--100米试题:驾驶机动车通过窄路、窄桥时,最高速度不能超过多少?A.60公里/小时B.50公里/小时C.40公里/小时D.30公里/小时答案:D凡是题目中没有说是在高速路上,而行驶有麻烦的都是选30公里,如果是高速路,题目中有“能见度小于200米”,答案就选60公里,同样的,看到“能见度小于100米”就选“40公里”,“能见度小于50米”就选“20公里”。
初三错题集整理
初三错题集整理
错误题目:请问,菲律宾的首都是马尼拉吗?
参考内容:
菲律宾的首都确实是马尼拉。
马尼拉是菲律宾的政治、经济和文化中心,也是该国最大的城市。
它位于菲律宾主岛卢索恩省的西南部,处于马尼拉湾的东岸。
马尼拉是菲律宾的交通枢纽,拥有菲律宾最重要的深水港口。
这座城市有着悠久的历史和丰富多样的文化遗产,也是菲律宾的旅游目的地之一。
错误题目:请问,美国的首都是纽约吗?
参考内容:
不,美国的首都不是纽约。
美国的首都是华盛顿特区。
华盛顿特区位于美国东海岸,濒临美国大西洋沿岸,是美国的政治中心。
华盛顿特区是一个独立的特区,受美国联邦政府直接管辖。
这里有美国总统的办公室、国会大厦、最高法院及其他重要政府机构的所在地。
此外,华盛顿特区还拥有丰富的博物馆和文化遗产,是美国重要的旅游目的地之一。
错误题目:请问,巴黎是意大利的首都吗?
参考内容:
错误,巴黎并不是意大利的首都。
巴黎是法国的首都,位于法国中北部的塞纳河畔,是法国的政治、经济和文化中心。
巴黎是世界上最受欢迎的旅游城市之一,也是法国最大的城市。
它以美丽的文化景观、知名的博物馆和艺术品、世界级的购物场
所和精致的法国美食而闻名。
而意大利的首都是罗马,罗马是一个有着两千七百多年历史的古老城市,是古罗马帝国和文艺复兴时期的中心。
罗马也是世界上最重要的考古遗址之一,拥有众多的历史和文化遗产。
错题集
1. He said it was impossible for ______ a mistake in a computer’s calculation, so we can relay on that.A. there beingB. there would beC. there to beD. there was2. There ought to be less anxiety over the perceived risk of mountain climbing than _____ in thepublic mind today.A. existsB. existC. existingD. to existing3. The law regards him as a criminal, _____ he friend or enemy.A. beB. beingC. wereD. are4. Advertising is distinguished from other forms of communication in _____ the advertiser pays for the messageto be delivered.A. thatB. whichC. spite of the fact thatD. what5. I was to have made a speech if _____.A. I was not called awayB. nobody would have called me awayC. I had not been called awayD. nobody called me away6. Fat cannot change into muscle _____ muscle changes into fat.A. any more thanB. no more thanC. no less thanD. much more than7. He’s _____ as a “bellyacher” ----he’s always complaining about something.A. who is knownB. whom is knownC. what is knownD. which is known8. Although they plant trees in this area every year, the lops of some hills are still _____.A. blankB. hollowC. vacantD. bare9. If it _____ too much trouble, I’d like a cup of coffee.A. hadn’t beenB. isn’tC. weren’tD. may not be10. Nobody came to see me when I was out, _____?A. did theyB. didn’t theyC. did sheD. did he11. My cousin Mary is often in a poisonous mood; I suppose it’s because she is _____ child.A. oneB. a uniqueC. a singleD. an only12. The two scholars worked at the task of writing a preface to the new dictionary for three hours _____ last night.A. at lengthB. in fullC. on endD. in time13. He promised to return the book the next day without _____.A. failB. defaultC. troubleD. failure14. The snow seems to have set _____ for the evening.A. uponB. inC. aboutD. down15. It’s a bad manners to _____ other people behind their backs.A. do upB. do byC. do away withD. do down16. Since I could not see anything through the microscope, _____ my careful adjustment, I gave up.A. for allB. above allC. after allD. in all17. _____ the severe cold, tourism was _____ full swing.A. Though … onB. Despite … onC. Though … inD. Despite … in18. “It appears that the discussion was friendly and fruitful.” means that _____.A. the discussion appears to be friendly and fruitfulB. the discussion appeared to be friendly and fruitfulC. the discussion appears to have been friendly and fruitfulD. the discussion appeared to being friendly and fruitful19. The government is committed to enforcing some of recommendations but others will be open to _____.A. argueB. debateC. contestD. dispute20. Somehow he _____ through his speech and sat down with great relief.A. fumblesB. tumblesC. stumblesD. rumbles21. This word, which is _____, should be replaced with another one which is more commonly used nowadays.A. absoluteB. abnormalC. obliviousD. obsolete22. This computer can _____ stored information in a matter of seconds.A. retainB. retakeC. retrieveD. retrace23. This is the fifth case of bird flu _____ in the city this month.A. when occurringB. occurringC. to occurD. occurred24. The following are all correct response to “I’m very pleased to meet you.” EXCEPTA. LikewiseB. Me tooC. So am ID. I’m very pleased to meet you too25. Thinking only about short-term interests is killing a _____ that lay golden eggs.A. henB. duckC. gooseD. turkey26. The Irvine group and their _____ are testing whether lasers do the job better.A. accomplicesB. collaboratorsC. confederatesD. partners27. Would you just _____ an eye over this letter before I put it in the post?A. castB. flingC. jerkD. toss28. If reading is to accomplish anything more than ____time, it must be active.A. wastingB. spendingC. passingD. idling29. I’d sooner you ____deliver the sofa tomorrow.A. didn’tB. shouldn’tC. wouldn’tD. mustn’t30. The title of the book was on the ____of my tongue, but I just could not think of it.A. endB. tipC. backD. point31. We know she was always as ____as her word, so we trusted her.A. goodB. honestC. faithfulD. true32. Noise pollution generally receives less attention than ____air pollution.A. doesB. it doesC. receivesD. it does over33. She is as ____as her mother is beautiful.A. plainB. commonC. dullD. humble34. His father had promised to buy him a computer ____he behaved himself.A. in caseB. whileC. afterD. provided35. Y ou must have seen the movie Enchanted last week, ____?A. mustn’t youB. haven’t youC. didn’t youD. don’t you36. Our factory is much more productive now. This year’s production is five times ___it was twenty years ago.A. whatB. thatC. thanD. as37. He rushed into the room, his face ______ with sweat.A. drippingB. drippedC. being drippedD. was dripping38. Fibers of hair and wool are not continuous and must normally be spun into thread _______woven into textile fabrics.A. as are theyB. when to beC. that they areD. if they are to be39. We tried to settle the problem with them as soon as possible, but they seemed to______ sincerity.A. lack ofB. be lack ofC. lack inD. be lacking in40. Oh, dear, I don’t feel very well. I think ______.A. I’ll faintB. I’m going to faintC. I’m faintingD. I’ve fainted41. _______ ghost exits in the world. That’s your illusion.A. No such a thing asB. No such a thing as aC. No such thing as aD. No such thing as42. If it _______ too much trouble, I’d love a cup of coffee.A. had n’t beenB. isn’tC. weren’tD. may not be43. If it _____ too much trouble, I'd love to have a cup of coffee.A. hadn't beenB. isn'tC. weren'tD. may not be44. I hope you_____ all the material before you make the final decision.A. will have readB. will readC. will be readingD. would have read45. He never hesitates to make _____criticisms_____ are considered helpful to others.A. so ...thatB. so...asC. such...thatD. such...as46. In the lecture _____ he will tell us something about modern English usage.A. followingB. followedC. to followD. being followed47. People usually judge a man by the _____ he keeps.A. companyB. companionC. companiesD. companionship48. _____ your instruction, I would never have known how to go about the work.A. If not forB. UnlessC. ExceptD. But for49. Y ou were permitted into the hall for the film, _____ you sat at the back.A. unlessB. providedC. thoughD. suppose50. I underwent an operation _____ an early recovery.A. in hopes ofB. in the hopes ofC. in hope ofD. with the hope of51. Always bear in mind that your own resolution to succeed is more important than _____ thing.A. anyB. otherC. other aD. any other52. She said she wouldn't call us the next day, _____ she?A. wouldB. wouldn'tC. didD. didn't53. The airline says that this route is no longer _____, so they’re going to discontinue it.A. economicalB. economicC. beneficentD. beneficial54. He has been given until noon today to ______ to the police.A. turn himself upB. turn himself onC. turn himself inD. turn himself55. Believe in me, this dress may be expensive but it’s worth it because it’ll give you a real ______ in theinterview.A. allowanceB. bonusC. edgeD. profit56. Martha’s got a job, or _____ she tells me.A. whichB. soC. asD. is57. Such people as ______ by him were professors of the university.A. they were recommendedB. that were recommendedC. were recommendedD. recommended58. At first Jim was not quite clear what he was going to do after university, but now he seems_____ on becominga computer programmer.A. fitB. setC. disposedD. decided59. After working for the form for 10 years, he finally ______ the rank of deputy director.A. achievedB. approachedC. attainedD. acquired60. I didn’t answer all the questions, if only I _____ all of them.A. had answeredB. could answerC. would answerD. could have answered61. It will rain, ______the barometer is falling.A. soB. forC. asD. since62. I wish to invite you to dinner tonight, ______I?A. shallB. mayC. don’tD. would63. I don’t think those curtains _______ very well with the wallpaper.A. suitB. goC. fitD. match64. He told me part of the story and that was _______.A. itB. thisC. soD. that65. Please ________ from smoking until the airplane is airborne.A. preventB. resistC. refrainD. restrain66. Attendances at basketball matches have _______ since the coming of television.A. dropped inB. dropped downC. dropped offD. dropped out67. Housewives who do not go out to work feel they are not working to their full _______.A. capacityB. strengthC. lengthD. charges68. Sharp ________ make short graces. So don’t laugh at those lesser beings that do not have enough to supportthemselves.A. headsB. feetC. fingersD. stomachs69. Western Nebraska generally receives less snow than _____ eastern Nebraska.A. inB. it receives inC. doesD. it dose in70. They brought the land with a _____ to building a new office block.A. purposeB. reasonC. viewD. goal71. The sight of the fruit salad made John’s mouth _____.A. wetB. oozeC. waterD. moisten72. The economists are not quite optimistic about the economic ______ for Europe.A. outlookB. look outC. foresightD. project73. That _____ the case, we have to make some changes in our plan.A. isB. wasC. beingD. has been74. It was requested that all of the equipment____in the agreed time.A. erectedB. would be erectedC. be erectedD. will be erected75. The man sitting opposite me smiled dreamily, as if____something pleasant in the past.A. to rememberB. rememberedC. having been rememberedD. remembering76. I____him the Christmas gift by mail because he came home during the Christmas holidays.A. ought to have sentB. couldn’t have sentC. must have sentD. needn’t have sent77. It turned out that the children were not____for the accident.A. to blameB. to be blamedC. to be blamingD. to have been blamed78. The desegregation was achieved through a number of struggles,____been mentioned in previous chapters.A. a few of whichB. a few of themC. a few of thoseD. a few of that79. Setting up a committee might be a way____the project more efficiently.A. to be doingB. doingC. to doD. being done80. It____to see so many children in that mountainous area cannot even afford elementary education.A. pains herB. makes her painC. is painingD. is pained81. Our boss, Mr. Thompson,____a raise in salary for ages, but nothing has happened yet.A. was promisingB. has been promisingC. promisedD. has promised82. He was determined to sail around the world____his illness and old age.A. givenB. althoughC. despiteD. in spite83. Even if his letter ____ tomorrow, it ____ too late to do anything.A. will arrive...isB. should arrive...wereC. arrives...will beD. arrives...would be84. We can hear ____ from the back of the room.A. just as goodB. just as easyC. just as wellD. easily as well85. ____ drills that have no real topic have to remain as they are.A. ManufactureB. ManipulativeC. ManipulateD.Manifest86. This book has been in the works so long that I have lost ____ of most of the sources found for me by the staffof the library.A. traceB. trailC. trackD. touch87. The elbows on your coat have worn thin, so I must ____ them.A. mendB. patchC. repairD. pitch88. ____ and wage increases have not kept in step.A. ProductionB. ProductC. ProduceD. Productivity89. People under stress have performed ____ feats of strength, like lifting an automobile off an accident victim.A. specificB. extraordinaryC. abruptD. abnormal90. Modern appliances ____ us from a good deal of household work. For instance, the dryer frees us from hangingthe laundry.A. escapeB. benefitC. liberateD. comfort91. The audience waited in ____ silence while their aged speaker searched among his note for the figures he couldnot remember.A. respectiveB. respectC. respectfulD. respectable92. The disappearance of her paper has never been ____.A. counted forB. looked upC. accounted forD. checked up93. When he was asked about the missing briefcase, the man ____ ever seeing it.A. refusedB. deniedC. opposedD. resisted94. Communication between a young couple is a(n) ____ business.A. sharpB. dreadfulC. intenseD. delicate95. After so many weeks without rain, the ground quickly ____ the little rain that fell last night.A. skippedB. soakedC. retrievedD. absorbed96. We’ll ____ you as soon as we have any further information.A. notifyB. signifyC. communicateD. impart97. The fox fell into the ____ the hunters had set forit.A. bushB. trapC. trickD. circle98. I don’t know you want to keep the letter. I’ve ____ it up.A. tornB. givenC. brokenD. disposed99. The old lady ____ and fell from the top of the stairs to the bottom.A. slidedB. SlippedC. SplitD. spilled100. Free medical treatment in this country covers sickness of mind as well as __ sickness.A normalB regularC averageD ordinary101. The scene is so beautiful that it __my power of description.A. ascendsB. descendsC.transcendsD. overtakes102. For years he struggled ______ as teachers, an agent and the president.A by turnB on the turnC out of turnD in turn103. In the museum, I saw a __ of an old warship.A miniatureB mineralC minimumD minister104. Sharp __make short graces. So don’t laugh at those lesser beings who do not have enough to support themselves.A. headsB. feetC. fingersD. stomachs105. He was a talented man, so his parents expected much of him. But unfortunately he failed his parents and he was behind _______.A. barsB. doorsC. windowsD. walls106. Tom _____ to New Y ork but he had something urgent to deal with.A. was goingB. was to goC. was to have goneD. is to go107. The _____ from the fire made the room warm and cozy.A. flickerB. glowC. flashD. glint108. The population of this city has _____ doubled in the past ten years.A. larger thanB. more thanC. as great asD. as many as109. The airplane ____ down at Cairo on its way to India.A. stayedB. visitedC. landedD. touched110. There was not a single reason _____ proved you were wrong.A. thatB. butC. whoD. as111. She speaks French fluently _____ she prefers to chatter in English.A. and yetB. and howC. but stillD. in spite of112. Since we are very happy with our modest salary, there is no need _____ so much money.A. to haveB. of havingC. in havingD. with having113. ______, I’ll marry him all the same.A. Was he rich or poorB. Whether rich or poorC. Were he rich or poorD. Be he rich or poor 114. It was _____ we had hoped.A. more a success thanB. a success more thanC. as much of a success asD. a success as much as 115. The economic recession has meant that job _____ is a rare thing.A. SecurityB. safetyC. protectionD. secureness116. If your car _____ any attention during the first 12 months,take it to an authorized dealer.A. shall needB. should needC. would needD. will need117. I think an afternoon in the open air will do us good, _____?A. doesn’t itB. do youC. don’t youD. does it118. The old woman would have been drowned _____ a passer-by dragged her out of the water.A. but forB. but thatC. withoutD. if119. The activities of each day, _____ visiting the famous places of interest or anticipating the traditional party of local people, went quite smoothly.A. it beingB. be itC. was itD. it was120. This sort of rude behavior in public hardly _____ a person in your position.A. becomesB. fitsC. supportsD. improves121.____ their terms, we would go bankrupt.A. If we acceptB. If we should acceptC. If we had acceptedD. If we are to accept122. He is quite worn out from years of hard work. He is not the man ____________he was 20 years ago.A. whichB. thatC. whoD. whom123. Even as a girl, __________to be her life, and theater audiences were to be her best teachers.A. performing by Melissa wereB. it was known that Melissa’s performanc es wereC. knowing that Melissa’s performances wereD. Melissa’s knew that performing was124. Agriculture is the country’s chief source of wealth, wheat _____ by far the biggest cereal crop.A. permitB. beenC. beD. being125. Time _____, the celebration will be held as scheduled.A. permitB. permittingC. permittedD. permits126. ______ you _____further problems with your printer, contact your dealer for advice.A. If, hadB. Have, hadC. Should, haveD. In case, had127. Y ou____ borrow my notes provided you take care of them, I told my friend.A. couldB. shouldC. mustD. can128. He is too shy to ask a stranger the time, _____speak to a room full of people.A. much moreB. much asC. still lessD. still as129. Any possible solution to the Irish question can only come ____ through dialogue.A. aboutB. acrossC. aroundD. at130. All the newspapers wanted to do was to photograph the police officers ____the demonstrators.A. keeping withB. tangling withC. adhering toD. devoting to131. Some men seek office, not to be useful to the state and the grassroots, but for the ____ and fishes.A. breadB. meatC. loavesD. foods132. Last year, I paid a three-day visit to the company as a visiting engineer, and was treated ____.A. suchB. like itC. as suchD. such as133. The juvenile delinquent was released in ____ of his good behavior.A. caseB. wayC. viewD. event134. The ____ crown jewels are kept in the Tower of London.A. valuedB. valuelessC. invaluableD. worthy135. The outline of the figure was barely _____ in the darkness.A .susceptible B. invisible C. perceptive D. perceptible136. As a ____ actor, he can perform, sing , dance and play several kinds of musical instruments.A. flexibleB. versatileC. sophisticatedD. productive137. Paul earns very little as a classical cellist, ____ his brother’s pop musicals have made millions.A. in contrast toB. compared withC. whereasD. though138. Although cats cannot see in complete darkness, their eyes are much more____ to light than are human eyes.A. glowingB. brilliantC. sensitiveD. gloomy139. It will be safer to walk the streets because people will not need to carry large amounts of cash; virtually all financial____ will be conducted by computer.A. transactionB. transmissionsC. transitionsD. transformation140. Which of the following sentences is INCORRECT?A. All his lectures are very interesting.B. Half their savings were gone.C. Many his friends came to the partyD. Both his sisters are nurses.141. Which of the following words can NOT be used to complete “We’ve seen the film_______”?A. beforeB. recentlyC. latelyD. yet142. In the face of unexpected difficulties, he demonstrated a latent for quick, ________action.A. determiningB. defensiveC. demandingD. decisive143. Because of the economic crisis, industrial output in the region remained__________.A. motionlessB. inactiveC. stagnantD. immobile144. The police had difficulty in _________ the fans from rushing on to the stage to take photos with the singer.A. limitingB. restrainingC. confiningD. restricting145. Joan is in the dorm, putting the final ________ to her speech.A. detailsB. remarksC. commentsD. touches146. For the advertised position, the company offers a (n) ________salary and benefits package.A. generousB. plentifulC. abundantD. sufficient147. The prospect of increased prices has already ________worries.A. provokedB. irritatedC. inspiredD. hoisted148.With the elevation of people’s standard of living, cosmetics ________favorite topic, especially among women.A. has becomeB. have becomeC. becomeD. becomes149. A new idea is first condemned as ridiculous, _____ dismiss as trivial, until finally it becomes what everybody knows.A. thenB. laterC. and thenD.after that150. I am only one ;but still I am one. I cannot do _______, but still I can do something, I will not refuse to do ______I can do.A. all, whatB. anything, somethingC. everything , thoseD. everything, the something151. In the sentence "It's no use waiting for her", the italicized phrase is ______________.A. the objectB. an adverbialC. a complementD. the subject152. Due to personality _______________, the two colleagues never got on well in work.A. contradictionB. conflictC. confrontationD. competition153. The company has capitalized _____ the error of judgment made by its business competitor.A. inB. overC. withD. on154. Tim has failed three courses this semester, so he will have to _____ them next semester.A. remakeB. repeatC. reapplyD. revise155. At first Jim was not quite clear what he was going to do after university, but now he seems _____ on becoming a computer programmer.A. fitB. setC. disposedD. decided156. Bus services between Town Centre and Newton Housing Estate will be _____ until the motorway is repaired.A. discontinuedB. suspendedC. haltedD. ceased157. According to the new tax law, any money earned over that level is taxed at the ______of59 percentA. ratioB. percentageC. proportionD. rate158. There are still many problems ahead of us, but by his time next year we can see light at the end of the _________.A. battleB. dayC. roadD. tunnel159. This spacious room is ________ furnished with just a few articles in it.A. lightlyB. sparselyC. hardlyD. rarely160. Men differ from animals ____ they can think and speak.A. for whichB. for thatC. in thatD. in which161. This company has now introduced a policy _pay rises are related to performance at work.A. whichB. whereC. whetherD. what1---5 CAAAC 6---10 ACDBA11---15 DCABD 16---20 ADCAC21---25 DCCCC 26---30 BACAB31---35 AAADC 36---40 AADDB41---45 CCBAD 46---50 CADBA51---55 DDBBC 56---60 BCBCA61---65 BBBDC66---70 CADCC71---75 CACCA76---80 DAACA81---85 BCCCB86---90 CBDBC90---95 CCBDD96---100 ABABD101---105 CDADA106---110 CBBDB111---115 AADCD116---120 BCBBA121---125 BBDDB126---130 CDCAB131---135 CCCCD136---140 BCADC141---145 DDCBD146---150 AAACD151---155 DBDBB156---160 BDDBA161 B。
错题集
协和版:测得一组资料,如身高或体重等,从统计上讲,算术均数与其标准差的大小无关在指定尿铅95%参考值范围时,宜采用界值为:<P95σ-X表示的含义是总体均数的标准误估计值两小样本均数比较时,若方差不齐,可选择t’检验区间-X ±1.96S-X可用来估计总体均数的95%的可信区间配对设计资料的t检验,其检验假设为差值的总体均数等于0成组设计两样本比较的t检验,其检验假设为两总体均数相等在完全随机设计的方差分析中,必然有SS总=SS组间+SS组内随机区组设计的方差分析中,V区组=V总-V处理-V误差随机区组设计要求区组内个体差异越小越好,区组间差异越大越好。
方差分析中,多个试验组与一个对照组均数的多重比较,宜采用q检验对于服从二项分布的率或百分比资料进行方差分析,可考虑进行平方根反正弦变换标化率不反映某现象发生的实际水平。
经调查甲乙两市的冠心病粗死亡率为45/10万,按标准人群年龄构成标化后,甲市为52/10万,乙市为40/10万,故可认为甲市年龄别人口构成较乙市年轻。
欲比较两工厂工人某职业病患病率的高低,需假设两厂该工种工人的工龄构成相同。
直接标准化法选择的标准是各年龄组标准人口构成比或各年龄组标准人口数。
计算动态数列指标可以是实际数、平均数、率、构成比HBsAg总体阳性率95%可信区间表示π一定时,随机抽取n相等的100个样本率,至少有95个推断正确。
总体率(1-α)可信区间指求得的区间包含总体率的可能性为(1-α)在率比较的假设检验中,由于观察单位数较小,得P>0.05,若适当增加样本观察单位数,可增大理论频数。
在配对设计差值的符号秩和检验中,绝对值等于3的差值有-3、-3、3、3。
如果它们的位次为4、5、6、7,则第2个-3的秩次应为-5.5配对比较的秩和检验,若检验假设H0成立,则正秩和与负秩和相差不会很大。
四组等级资料比较宜采用秩和检验。
某医师调查得10名女中学生体重X(kg)与肺活量Y(L),经直线回归分析知,b=0.0748,若t b>t0.05,8,按α=0.05水准,可认为肺活量随体重增加而增加。
作业错题集(全品)
第一章 有理数1、下列各数,3,-5,-21,0,2,0.97,-0.21,-6,9,32,85,1。
其中正数有 个,负数有 个,正分数有 个,负分数有 个。
2、下列说法错误的是( )A 负整数和负分数统称为负有理数B 正整数,负整数和0统称为整数C 正有理数和负有理数统称为有理数D 0是整数,但不是分数3、已知零件的标准直径是100mm ,超过标准直径的数量(mm )记作正数,不足标准直径的数量(mm )记作负数,检验员某次抽查了五件样品,检查结果如下:(1)试指出哪件样品的大小最符合要求?(2)如果规定误差的绝对值在0.18mm 之内是正品,误差的绝对值在0.18mm-0.22mm 之间是次品,误差的绝对值超过0.22mm 是废品,那么这五件样品分别属于哪类产品?4、下列运算:①(-18)÷(-9)=2;②(-7298)÷8=-(72+98)×81=-991 ③0.75÷(-585)=-43×458=-152 ④|-9|÷|-111|=9×11=99 其中运算正确的有( )A 1个B 2个C 3个D 4个5、计算题36÷7.2+(-48.6)÷2.4 (-1)×(-1)2×(-1)3×…×(-1)99×(-1)1006、观察下列等式:31=3,32=9,33=27,34=81,35=243,36=729,37=2187,…。
解答下列问题:3+32+33+34+…32016的末尾数字是( )7、-22÷34-[22-(1-21×31)]×12 331-22÷[(21)2-(-3+0.75)]×58、观察下列运算过程:S=1+3+32+33+…+32015+32016,①①×③,得3S=3+32+33+…+32015+32016+32017,②②-①,得2S=32017-1,S=32017-12运用上面的计算方法计算:1+5+52+53+…+520179、-392617×13 -24÷(232)2+521×(-61)-(0.5)210、若a 是整数,请比较a 2与a 的大小。
二年级上册语文错题集
二年级上册语文错题集二年级上册语文错题集1、写错的字:观琴棋错题原因分析:主要是因为没掌握牢和粗心出错的。
2、多音字:奔bēn(奔跑)bèn(奔向)分fēn(分辨)fèn(养分)错题原因分析:多音字第一个是因为把拼音搞反了,第二个是因为分不太会组词。
3、出错的拼音:晨(chén)樱桃(yīng) 错题原因分析:分不清前后鼻音。
4、混淆的字:座(座位)――坐错题原因分析:座位的座和坐下的坐就是不太会使用。
5、选字填空:状、壮形( ) 奖( ) 强( ) ( )丽错题原因分析:分辨不清字的意思。
6、照样子,填词语:(拍)皮球()青虫()故事()钢琴()西瓜()音乐汽车()作业错题原因分析:学生不能正确使用动词。
7、错题:(无)谷(风)登春(华)秋(时)原因:学生没有根据词语意思去填写,随便填写了一个同音字。
8、错题:“区”共(5)画,第二画是(�颍�“巨” 共(6)画,第二画是(�颍�原因:暑假上来学生对上学期的一些特殊笔画已遗忘,把它们全拆开了。
9、错题:(五颜六色)的云海(高大)的雄鸡原因:学生对事物的特点不够了解,所以在填写时摸棱两可。
10、错题:工(做)(做)文(做)业(作)事原因:平时遇到类似的词语时,没根据意思好好去记,一旦要求灵活运用就乱用。
11、错题:橡皮筋的弹(tán dàn)力很好。
子弹(tán dàn )穿过了那件厚厚的防弹(tán dàn)衣。
原因:学生知道读什么音,可选时粗心,也有个别学生声调分不清。
12、错题:乐颠颠(快快乐)(高兴兴)(明白白)原因:学生只注意ABB形式,没有考虑这样的词存不存在。
13、错误:我的家乡是美丽的湖州。
湖州是我美丽的家乡。
李小青是我们班的劳动委员。
劳动委员是我们班的李小青。
原因:“是”字句改写时,没有考虑前后内容。
14、错题:灿烂(地)阳光兴奋(的)回家跑(地)快原因:对于“的”“地”“得”运用是一个难点,二年级学生还小,分不清词性,在加上刚接触,因此做错较多。
七年级上册数学错题集
七年级上册数学错题集1、若干学生住若干间房间,如果每间住4人,则有20人没有地方住,如果每间房住8人,则有一间只有4人住,问共有多少个学生?设有x间宿舍每间住4人,则有20人无法安排所以有4x+20人每间住8人,则最后一间不空也不满所以x-1间住8人,最后一间大于小于8所以0<(4x+20)-8(x-1)<80<-4x+28<8 乘以-1,不等号改向 -8<4x-28<0加上28 20<4x<28 除以4 5<x<7x是整数所以x=6 4x+20=44所以有6间宿舍,44人2、甲对乙说:“你给我100元,我的钱将比你多1倍。
”乙对甲说:“你只要给我10元,我的钱将比你多5倍。
”问甲乙两人各有多少元钱?设甲原有x元,乙原有y元. x+100=2*(y-100) 6*(x-10)=y+10 x=40 y=1703、小王和小李从AB两地,相向而行,80分钟后相遇,小王先出发60分钟后小李在出发,40分钟后相遇,问小李和小王单独走完这段距离需要多长时间?解:设小王的速度为x,小李的速度为y根据:路程=路程,可列出方程:80(x+y)=60x+40(x+y)解得y=1\2x 设路程为单位1,则:80(1\2x+x)=1 解得x=1\120 所以y=1\240所以小王单独用的时间:1*1\120=120(分)小李单独用的时间:1*1\240=240(分)4、一天,猫发现前面20米的地方有只老鼠,立即去追,同时,老鼠也发现了猫,马上就跑。
猫每秒跑7米,用了10秒追上老鼠。
老鼠每秒跑多少米?解:设老鼠每秒跑X米7*10=10X+20 10X=70-20 X=5 答:老鼠每秒跑5米。
5、一项工程,甲单独做10天完成,乙单独做6天完成。
先由甲先做2天,然后甲乙合作,问:甲乙合作还需要多少天完成工作?设甲乙合作一起还需要x天完成,总工程为1,甲先做了2天,他完成了总工程的2*1/10=1/5 那么此时还剩下为1-1/5=4/5 ,那么就有了(1/10+1/6)*x=4/5 解得x=3 ,即一起工作3天完成整个工作。
错题集,对于学习数学的重要性
错题集,对于学习数学的重要性错题集对于学习数学的重要性体现在以下几个方面:1. 帮助学生发现并纠正错误在学习数学的过程中,学生难免会犯错。
有时候是因为不理解题目,有时候是因为粗心犯错。
将错题整理成错题集的形式,可以帮助学生更清晰地发现自己的错误,并且及时地加以纠正。
通过不断地总结和分析错题,学生可以逐渐增强自己的问题识别能力和解决问题的能力,提高学习效率。
2. 深化对知识点的理解通过整理错题集,学生可以系统地回顾所学知识点,深入思考自己的理解和掌握情况。
在整理过程中,学生可以重新思考那些曾经出错的题目,找出自己的思维漏洞和问题所在,以此来加强自己对知识点的理解和掌握程度。
这有助于学生更加深入地理解数学知识,为进一步的学习打下坚实的基础。
3. 提高解题能力我们来探讨一下如何有效地制作和利用错题集:1. 定期整理错题2. 增加错题集的分类和标注在整理错题集的过程中,学生可以根据问题的类型、知识点的难度等因素进行分类和标注。
这样可以方便学生以后针对性地进行复习和总结,有助于更系统地理解和掌握知识点。
3. 制定学习计划和目标在利用错题集的过程中,学生可以根据自己整理的错题集制定相应的学习计划和目标。
可以根据错题集的内容和特点,制定针对性的学习计划,有针对性地进行知识点的强化和巩固,提高学习效果。
4. 老师和家长的指导和帮助在整理和利用错题集的过程中,学生可以寻求老师和家长的帮助和指导。
老师和家长可以从侧面指导学生整理错题集的方法和技巧,帮助学生更好地利用错题集进行学习和提高自己的数学水平。
错题集对于学习数学的重要性不言而喻。
通过整理和利用错题集,学生可以更好地发现和纠正自己的错误,深化对数学知识点的理解,提高解题能力。
学生在学习数学的过程中,要时刻重视并合理地利用错题集,从而更好地提高自己的数学水平。
五年级错题集
第一单元小数乘法【错题1】【错误做法】0.72×5=36【成因分析】部分学生对小数乘法计算不熟悉【解决对策】理解计算法则.多练习。
【正确做法】【错题2】一块正方形塑料板,边长是1.5米,它的面积各是多少?【错误做法】1.5×1.5=22.5【成因分析】面积计算小数位数错误【解决对策】复习正方形周长和面积,正确计算。
【正确做法】1.5×1.5=2.25【错题3】在地球上1千克的物体到月球上约重0.16千克。
在地球李老师的体重是65千克如果在月球上大约重多少千克?【错误做法】65×0.16=104【成因分析】部分学生题意不理解不能例式【解决对策】理解题意.正确列式。
【正确做法】65×0.16=10.4【错题4】4 1.5×105【错误做法】 1.5×105=1.5×(10+5)=1.5×10+5=15+5=20【成因分析】学生对乘法运算定律不理解不能灵活运用【解决对策】理解运算定律多练习。
【正确做法】 1.5×105=1.5×(10+5)=1.5×10+1.5×5=15+7.5=22.5【错题】【错误做法】【成因分析】不够理解计算运算顺序。
【解决对策】多练习。
【正确做法】56×1.3=72.8(千米/时)第二单元 小数除法【错题】5 0.98÷0.2 【错误做法】【成因分析】学生不能分析题目数据,不能灵活运用运算定律 【解决对策】理解题目和运算定律多练习。
【正确做法】【错题】6 84÷15 【错误做法】 84÷15=36【成因分析】整数除以整数商是小数不会【解决对策】根据小数的性质在整数后点上小数点加上0做 【正确做法】84÷15=3.6【错题7】 62.5÷25 0.81÷27【错误做法】62.5÷25=25 0.81÷27=0.3【成因分析】小数除以整数商是小数不够熟练,商的小数点漏掉 【解决对策】多练习养成良好的计算习惯【正确做法】 62.5÷25=2.5 0.81÷27=0.03【错题8】 3.9÷1.5 【错误做法】 3.9÷1.5=26【成因分析】小数除以小数计算法则学生不够熟练运用 【解决对策】理解法则正确计算 【正确做法】3.9÷1.5=2.6【错题9】 22.3÷99【错误做法】 22.3÷99=0.22525……【成因分析】用循环小数表示不够熟练循环节找不出【解决对策】多练习用循环小数表示数。
考全驾车错题集
1.驾驶人在下车前应注意是什么?∙A、车门开的幅度不要过大∙B、开门下车动作要迅速∙C、仔细观察左后方情况∙D、开车门的动作要缓慢正确答案:ACD2.在雨天哪类路面最容易发生侧滑?∙A、刚下雨的路面∙B、大雨过后路面∙C、暴雨中的路面∙D、大雨中的路面正确答案:A3.移动脊柱骨折的伤员,切勿扶持伤者走动,可用软担架运送。
∙对∙错正确答案:错4.黄色三角形的都是--注意**的意思。
5、在这种山区危险路段怎样安全会车?∙A、选择安全的地点∙B、做到先让、先慢、先停∙C、靠山体一侧的让行∙D、不靠山体一侧的让行正确答案:ABC6. 驾驶机动车遇到校车在道路右侧停车上下学生时,应注意什么?∙A、同向只有一条机动车道,后方机动车应当停车等待∙B、同向有两条机动车道,左侧车道后方机动车可以减速通过∙C、同向有三条机动车道,中间车道后方机动车应当停车等待∙D、同向有三条机动车道,左侧车道后方机动车可以减速通过正确答案:ACD7.当机动车转向失控行驶方向偏离,事故已经无可避免时,要采取什么措施?。
∙A、紧急制动∙B、迅速转向进行调整∙C、迅速向无障碍一侧转向躲避∙D、迅速向有障碍一侧转向躲避正确答案:A8.转向失控后,若机动车偏离直线行驶方向,应怎样使机动车尽快减速停车?∙A、轻踏制动踏板∙B、拉紧驻车制动器操纵杆∙C、迅速抢挡减速∙D、果断地连续踩踏、放松制动踏板正确答案:D9.最容易发生侧滑的路面是:∙A、干燥水泥路面∙B、下雨开始时的路面∙C、潮湿水泥路面∙D、大雨中的路面正确答案:B10.怎样正确使用灭火器灭火?∙A、人要站在下风处∙B、灭火器瞄准火源∙C、尽量接近火源∙D、灭火器瞄准火苗正确答案:B11右侧标志警告前方道路左侧变宽。
∙对∙错正确答案:错12.右侧标志警告前方道路右侧变宽。
∙对∙错正确答案:错13.牛的标志是:注意牲畜;小鹿的标志是:注意保护野生动物14.下坡路制动突然失效后,不可采用的办法是什么?∙A、将机动车向上坡道方向行驶∙B、用车身靠向路旁的岩石或树林碰擦∙C、利用道路边专设的避险车道停车∙D、拉紧驻车制动器操纵杆或越二级挡位减挡正确答案:D15.抢救失血伤员时,要先采取什么措施?∙A、观察∙B、包扎∙C、止血∙D、询问正确答案:C16.烧伤伤员口渴时,只能喝白开水。
错题集
1)钟面上最短的是()针,它从“12”走到“2”走了()时,分针从“12”走到“2”走了()分,秒针从“12”走到“2”走了()秒。
分针走一小格,秒针走一圈,是()秒。
时针走了2小时,分针走了()2)1:15 到3:20,经过了多少时间3)12:20到2:05经过了多少时间4)6:30再过50分钟时()5)强强跑50米大约要用10()6)为民超市早上9:00开始营业,晚上8:00停止营业,全天营业()小时。
问题:1)“六一”儿童节的联欢会8:30开始,10:00结束。
(!)林芳从家到学校要走18分钟,他想在联欢会开始前赶到学校,他最晚必须在什么时候从家里出发?(2)赵刚上学的路上要花25分钟,他到学校时,联欢会刚好开始,赵刚是什么时候从家里出发的?2、明明下午5:10放学,他放学后去超市买东西用了30分钟,走回家又涌了35分钟,明明什么时候到家。
3、电扇:319元自行车:396元、椅子:248元1)买一台电扇和一把椅子大约需要多少钱?2)自行车比椅子大约贵多少钱?3)妈妈带了700元钱,能买回电扇和自行车这两件商品吗?4、小明早上7:00从家出发,在家门口等车用了10分钟,接着坐了15分钟汽车,又步行5分钟才到学校,小明在路上花了多长时间?到校时间是几时几分?5、从甲地到乙地要用45分钟,如果这列火车9:00到达乙地,那么你知道它是在什么时候从甲地开出的吗?6、工人叔叔要在7:30锯完一根木头,每锯一次用4分钟,叔叔最晚要在几点开始锯木头,才能把木头锯成5段?7、小小下午4:10放学,路上用了10分钟,回家后写了25分钟语文作业,然后写数学作业,做完作业后,打开电视机时,正好开始播放动画片《柯南》,17:00大风车17:20柯南你们知道我写数学作业用了多长时间吗?8、路边等距离安装了一些路灯。
小新从第一个路灯出发,用了12秒跑到第4个路灯。
1)照这样的速度,出发后几秒钟跑到第8个路灯?2)出发36秒后跑到第几个路灯?9、商场举行促销活动:电饭锅:原价180元,现价:110元电话机:原价:210元,现价:190元1)算算买着两件商品比实际分别便宜了多少元?2)现在买这两件商品一共需要多少元?10、豆豆家、丁丁家和学校在同一条马路上,豆豆家距离学校320米,丁丁家距离学校280米,丁丁和豆豆家相距多少米?(请考虑不同的情况)11、甲、乙两个车间共有290人,乙、丙两个车间共有380人,丙、丁两个车间共有480人。
如何整理错题集
如何整理错题集
整理错题集需要分步骤进行,以下为详细建议:
1.准备阶段:选择一个本子或者在一个本子里划分区域作为错题集。
每个错题需要预留一厘米的空白边距,用于标注题号、类型,以便后续查找。
2.摘抄阶段:摘抄自己做错的题目,包括正确的答案和错误的答案。
对于错误答案,需要分析错误原因,并将分析写在题目旁边。
3.分析阶段:对每道错题进行深入分析,明确错误产生的原因,并标明解题的正确方法及依据原理。
同时,也需要对比其他答题角度,找出哪种角度更好,以此提升思维能力。
4.回顾阶段:定时回顾和温习错题集。
最好的方式是再做一遍错题,对于重复犯错的题目,需要重点关注,弄懂弄会。
5.拓展阶段:在错题集的基础上进行拓展,将一些好题也加入错题集中,这样能够进一步提升学习效果。
整理错题集不仅可以帮助你找出学习中的易错点,还可以帮助你巩固知识点,提升学习效率。
同时,错题集也可以作为学习笔记,方便日后的复习和查阅。
错题集——精选推荐
错题集⼀.填空1.778÷7=111……1的验算算式是()2.□15÷6,要使商是两位数,□⾥最⼤填()3.265÷4的商是()位数4.在算式7□□÷9中,商的⼗位上可能是()。
5.112⼈参加乒乓球⽐赛,如果都参加单打⽐赛,可以分成()组,如果都参加双打⽐赛,可以分成()组。
6.()÷6=34……(),被除数最⼤是()。
⼆.解决问题1.学校原有故事书287本,⼜买来128本,把这些故事书平均分给3年级5个班级,每个班级分得多少本?2.新民⼩学举⾏⽥径运动会,有416⼈参加体操表演,765⼈当观众,132位⼩朋友参加检阅。
(1)体操队中每8⼈⼀组,可以分成⼏组?(2)观众坐在9个看台上,平均每个看台做多少⼈?(3)参加检阅的⼩朋友每⼈拿两朵花,共要准备多少朵花?3两位⽼师和124名学⽣去游园,他们每⼈想喝⼀瓶汽⽔,需要买多少瓶?(汽⽔买5瓶送1瓶)。
4.在()÷8=()……()中,商和余数相同,被除数最⼤是多少?最⼩是多少?5.⼀串珠⼦按“3⿊1⽩”的顺序排列,第99个珠⼦是什么颜⾊?第120个珠⼦?6.在1-100之间有多少个数不是7的倍数?7.⽅⽅和明明⽤同⼀个数做除法,⽅⽅把它除以12,明明把它除以15.⽅⽅除得的商是32还余6,明明的计算结果你知道吗?除数(2)⼀.填空1.三位数除以⼀位数,商最少是()位数。
2.800÷4,可以把800看作是()个百,平均分成()份,每份是()个百,即()。
3.⼀个数除以5,商是12,余数是3,这个数是()。
4.532是7的()倍,()的7倍是798。
5.⼀个数的6倍是780,这个数的5倍是()。
6.6□4÷6.要使商中间有0,□内可以填(),要使商末尾有两个0.□内只能填()7.4□8÷4,要使商中间有0,并且没有余数,□内最⼩可填()。
8.279÷□,要使除得的结果没有余数,且除数是⼀位数,□内可填()。
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题
目
错因简析
要想比别人更优秀,只有在每一件小事上比功夫。
题
目
错因简析
要想比别人更优秀,只有在每一件小事上比功夫。
错题摘录表
写在前面:本表格用于同学们自己进行自测、阶段性测试试卷分析或阅读资料是的易 录,,分析时从三个方面(会做的试题做错,模糊的题目做错,不会做的题目做错) 析,在这些做错的题目中到底什么原因引起的(智力因素包括知识掌握漏洞,方法技 ,思维能力不足等;非智力因素包括审题不仔细、计算粗心出错、表达不规范等), 体的原因,同时写好解决好这个原因的方法和措施。
正确答案
要想比别人更优秀,只有在每一件小事上比功夫。
正确答案
要想比别人更优秀,只有在每一件小事上比功夫。
错题摘录表
写在前面:本表格用于同学们自己进行自测、阶段性测试试卷分析或 错题摘录,,分析时从三个方面(会做的试题做错,模糊的题目做错,不会 进行分析,在这些做错的题目中到底什么原因引起的(智力因素包括知识掌 能缺陷,思维能力不足等;非智力因素包括审题不仔细、计算粗心出错、表 写出具体的原