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高频错题
#1 · 常错题
#2 · 常错题
将循环小数化为分数:整数、有限小数、循环小数都可以化成分数,整数和有限小数化成分数容易,循环小数如何化成分数呢?请看下面的例子. 将循环小数$0.288\ldots $化成分数:将$0.288\ldots $分别乘$10$和$100$,得$2.88\ldots $和$28.88\ldots $,两个得数相减得$26(两个得数小数部分相同)$,而相减所得的$26$应该是$0.288\ldots $的$\left(100-10\right)
#3 · 常错题
今年市委市政府积极推进创建“全国文明城市”工作,市创城办公室为了调查初中学生对“社会主义核心价值观”内容的了解程度\((\)程度分为:“\(A-\)十分熟悉”,“\(B-\)了解较多”,“\(C-\)了解较少”,“\(D-\)不知道”\()\),对我市一所中学的学生进行了随机抽样调查,根据调查结果绘制了两幅不完整的统计图如图,根据信息解答下列问题: \((1)\)本次抽样调查了多少名学生; \((2)\)补全条形统计图和扇形统计图; \
#4 · 常错题
#5 · 常错题
一批水果的标准质量是$30$千克,超出标准质量记为正,低于标准质量记为负,现记录如下:$+8$,$-9$,$-5$,$+7$,$-8$,$-6$,$+7$,$+10$. $(1)$这批水果总共有多少千克? $(2)$第一天按每千克价格$5$元卖出了这批水果的一半,第二天为了吸引顾客把第一天卖水果的价格降价$20\%$后作为新的价格,卖完了剩下的水果,请计算一下这批水果一共卖了多少钱?
#6 · 常错题
分类讨论思想是数学的重要思想,在学习有理数的过程中,也深有感受$!$ $(1)$当$ab \lt 0$时,若$b \gt 0$,$|a| \lt |b|$,则$a+b \_\_\_\_\_\_0$; $(2)$当$abc \lt 0$时,若$ab \gt 0$,则$c \_\_\_\_\_\_0$; $(3)$已知$a$,$b$,$c$是非零有理数,则$\frac{a}{|a|}+\frac{b}{|b|}+\frac{c}{|c|}=
精选练习题目
Do you like sports?Are you getting enough exercise?Well,if you\’re looking for a way to exercise,try walking. Walking is easy.There are no special instructions,and there are no rules.You just walk—left right,left,right.S
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你们何不一起演奏这首曲子呢? ______play the song together?
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You can get lost in the______ (森林).
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空气污染比水污染更严重. Air pollution ______water pollution.
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—When shall we travel to Australia,this year or next year? — is OK.You decide.( )
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-Do you have any brothers,Bill?( ) -Yes,I have two brothers.________ of them live in London.
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Chen Jie:Hello,Mr Smith! Mr Smith:Hello,Chen Jie.(1)______ Chen Jie:I\’m fine,thank you.Mr Smith,this is my classmate,Peter.Peter,this is our English teacher,Mr Smith. Mr Smith:Hi,Peter.Nice to meet you. Peter:(2)______
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What's wrong with my son's _____? He can't see things clearly.( )
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John wants to be a ,so he often helps sick people in the hospital.( )
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Do you think which team ______the coming match,Class 11 or Class 12?( win)
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It's time lo have a rest.Let's go out for a ______ (呼吸) of fresh air.
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He finds ______ really difficult for him to learn English well in just one year.
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Mr.Deng has got two daughters.________ of them like playing the violin.( )
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They often help .( )
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Mike found a set of ________.( )
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Please reply in writing to this invitation by Friday,December 20 th . ______ (词性)
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(1)Four books are on the desk. ______ (2)Kevin\’s schoolbag is on the chair. ______ (3)Four pictures are on the wall. ______ (4)Duoduo is the name of a boy. ______ (5)Baseballs are under the bed. ______
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Bird-watching,or "birding",is a very popular hobby these days,and it\’s a great way of getting outside with nature.So how can you get started? What you need When you start,a good field guide (野外指南) will help you learn bi
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Most people think ______(法语) is a beautiful language,but too difficult to learn.
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—Hello,I\’m Cindy and this is Tim. live next door. —Hello,nice to meet you.( )
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