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#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|}=

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九年级·英语·任务型阅读Unit 1 Here’s to our friendship and the future

In 1998, I wrote a letter for my future self with instructions not to open until my birthday in 2010. It was now 2011, so I decided to open it. This is what it said: Dear Sherri, By the time you read this, you will be 30

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九年级·英语·填空题Unit 1 Here’s to our friendship and the future

阅读下面短文，用括号内所给动词的适当形式填空（必要时可加情态动词或助动词）。 Ray was thought to be a strange boy. One day when he was flying his kite, he said to himself, “Did anybody ever try to fly a kite at night? I think it must be very fun. But the kit

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八年级·英语·填空题Section B

用方框中所给短语的适当形式填空 at the beginning of；write down； be able to；take up；get good grades 【1】I am going to study hard at school because I want to _____. 【2】Mike is old enough.I think he _____ look after himself. 【3】Let's _____

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八年级·英语·填空题Section B

用方框中所给单词的适当形式填空 mean；own；hobby；improve；team 【1】Growing vegetables is one of my grandpa's __. 【2】Sam wants to join the school football ____. 【3】The children are old enough to have their _____ bedrooms. 【4】I want to rememb

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八年级·英语·填空题Section B

用括号中所给单词的适当形式填空【1】More and more people have _____(person)computers at home. 【2】My mother loves _____(cook)for us every Saturday. 【3】I think my resolutions _____(be)the promises to myself.They can make my life easier. 【4

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八年级·英语·单词拼写Section B

根据句意及首字母提示完成单词【1】D____ the program and give me your group's ideas. 【2】Our P．E.teacher studied p_____ education when he was in university. 【3】It's a w_____ magazine.I buy it every Sunday. 【4】It's very important for us to

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八年级·英语·阅读理解Section B

阅读理解 Steve Jobs，the designer of Apple Computer，was not clever when he was in school.At that time，he was not a good student and he always made trouble with his schoolmates.When he went into college，he didn't change a lot.

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八年级·英语·填空题Section B

根据短文内容和括号内所给汉语意思，写出空白处各单词的正确形式 ( 每空一词 ) 。 Every year we get a new start.On New Year's Day ， we always 【 1 】 ( 写下，记下 )down our plans and put them up on the wall of our bedrooms. This year my dream is to 【 2 】 ( 学习 )to pla

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八年级·英语·填空题Section B

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空白处填入一个适当的词或使用括号中词语的正确形式填空。 After you have a dream ， what do you do with it ？ Do you try to make your dream real ？ Andrew Matthews, 【 1 】 Australian writer ， tells us that making your dreams r

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七年级·英语·单词拼写/单词释义Section A

five three have be she His parents' birthdays ______ both（两者都）in October. 一When is ______ birthday？一On August 12th. May is the ______ month of a year. Today is my son's ______ birthday. Now,Kimi ______ two brothers.

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七年级·英语·填空题Section A

______ comes before February.

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七年级·英语·填空题Section A

It's my ______ （uncle）bike.

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七年级·英语·填空题Section A

She can't ______ （play）baseball.

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七年级·英语·填空题Section A

______ （that） are my books.