人教版小学二年级下册数学思维练习题(一)讲课讲稿.doc

人教版小学二年级下册数学思维练习题(一)讲课讲稿.doc

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1、成都高新区芳草小学二年级下册数学思维练习题(一)    班级      姓名一.填一填:1.2,3,5,8,12,(),()2.1,3,7,15,(),63,()3.1,5,2,10,3,15,4,(),()4.△+○=9△+△+○+○+○=25 △=()○=()5.一根铁丝长20米,对折以后,再对折,这时每折长()米。6.一篮苹果,小明拿走一半后,妈妈和爸爸平均分剩下的一半,妈妈得了3个。篮里原来有()个苹果?7.某数加上5,乘以5,减去5,除以5,其结果等于5。求这个数是()。8.一把钥匙只能开一把锁。现在有4把钥匙4把锁,但不知哪把钥匙开哪把锁,最多要试()次就能配好全部的钥

2、匙和锁。三、应用题:1.有35颗糖,按淘气—笑笑—丁丁—冬冬的顺序,每人每次发一颗,想一想,谁分到最后一颗?2.淘气有300元钱,买书用去56元,买文具用去128元,淘气剩下的钱比原来少多少元? 3、30名学生报名参加美术小组。其中有26人参加了美术组,17人参加了书法  组。问两个组都参加的有多少人?4、一根木料截成5段要16分钟,如果每截一次的时间相等,那么截7段要几分钟? 5、从1楼走到4楼共要走48级台阶,如果每上一层楼的台阶数都相同,那么从1楼到6楼共要走多少级台阶? 6、一座楼房每上1层要走10级台阶,到小英家要走60级台阶,小英家住在几楼? 7、时钟3点钟敲3下

3、,6秒钟敲完,12点钟敲12下,几秒钟敲完?8、用数字1、2、3、4可以组成多少个不相同的3位数?9、在一根绳子上依次穿2个红珠、2个白珠、5个黑珠,并按此方式反复,如果从头开始数,直到第50颗,那么其中白珠有多少颗?10、学校有一条长60米的走道,计划在道路两旁栽树。每隔3米栽一棵,(两端都栽),那么共需多少棵树苗?11、仓库里有一批大米。第一天售出的重量比总数的一半少12吨。第二天售出的重量比剩下的一半少12吨,结果还剩下29吨。这个仓库原有大米多少吨?12、鸡和兔在一个笼子里,共有10个头,28条腿,问笼子里有几只鸡?几只兔?13、蛐蛐和蜘蛛共有8只,腿有54条。问蛐蛐和蜘蛛

4、各有几只?*14、东方小学举行数学竞赛,共有10道题。每做对一道得10分,做错一道题倒扣5分。小芳最终得了70分,那么她做对了几道题?HTML标记一览表及用法说明本文概括HTML常用标记列表、名称和意义以及详细解释,包括文件标记、排版标记、字体标记、清单标记、表格标记、表单标记、图形标记、链接标记、框架标记、影像地图、多媒体标记和其它标记,特别声明,本文转自网络。HTML标记一览表标记类型名称或意义作用备注文件标记●文件宣告让浏览器知道这是HTML文件 ●开头提供文件整体信息 ●标题定义文件标题,将显示于浏览器顶端 <BODY>●主体设计文件格</p><p>5、式及内容所在 排版标记<!--注解-->○说明标记为文件加上说明,但不被显示 <P>○段落标记为字、图、表格等之间留下一空白行 <BR>○换行标记令字、图、表格显示于下一行 <HR>○水平线插入一水平线 <CENTER>●居中令字、图、表格等显示于中间反对<PRE>●预设格式令文件按原代码的排列方式显示 <DIV>●定位标记设定字、图、表格等的摆放位置 <NOBR>●不换行令文字不因太长而换行 <WBR>●建议换行预设换行部位 字体标记<STRONG>●加重语气产生字体加粗Bold的效果 <B>●粗体标记产生字体加粗的效果 <EM>●强调标记字体出现斜体效果 <I>●斜体标记字体出</p><p>6、现斜体效果 <TT>●等宽字体Courier字体,字母宽度相同 <U>●加下划线加下划线反对<H1>●一级标题标记将字体变大,级数越高越小 <H2>●二级标题标记将字体变大 <H3>●三级标题标记将字体变大 <H4>●四级标题标记将字体变大 <H5>●五级标题标记将字体变大 <H6>●六级标题标记将字体变大</p> </div> <div class="mt-3 bg-white"> <div class="d-lg-block d-none px-3 px-lg-4 py-3 border-bottom text-center font-18"> 当前文档最多预览五页,下载文档查看全文 </div> <div class="detail-fixed-feature d-none d-lg-block" id="detailFixedFeatureBox"> <div class="px-3 px-lg-4 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