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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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七年级·英语·填空题选择疑问句

These are my rulers. (变成一般疑问句) ______these ______rulers?

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七年级·英语·填空题社会文化类阅读

Names are important for Chinese people.Parents choose a good name for their baby.They think that the good name will bring good luck to their child. Chinese surnames(family names) Chinese surnames come first.They are diff

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七年级·英语·填空题宾语从句

We are going to ______ (have) a farewell party.

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七年级·英语·填空题新闻报道类阅读

Now,many people cannot live without the Internet(因特网).Here is a Family Questionnaire(问卷) about the Smith family.After reading it,you can learn what they often do on the Internet. Family Questionnaire(问卷) The Smith Family

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七年级·英语·句型转换语法

Betty,are you going to check your email? (作否定回答) No, ____________.

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七年级·英语·填空题新闻报道类阅读

Meeting robot friends.Today,AI robots play an important role in people\’s daily lives.These robots work in many areas to help people. I\’m a teaching robot.My job is to spend time with children and teach them.I look like

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七年级·英语·选择题状语从句

---I will go to the park with my parents if it _____ tomorrow. ---Enjoy your time.( )

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七年级·英语·填空题状语从句

Hello!Welcome to my grandfather\’s farm.It\’s a big farm.(1)______ are many plants and animals on his farm.What can we see?Look!Many kinds(2)______ animals are beside the lake.We can see ducks,chickens,geese,pigs,horses,

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七年级·英语·选择题主谓一致

There ______ many students on the playground at the moment.( )

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七年级·英语·选择题主谓一致

Peter a baseball,but he doesn\’t a basketball.( )

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七年级·英语·填空题阅读判断题

In some foreign(外国) countries,some people don\’t like the number 13.They don\’t think 13 is a lucky number.For example,they don\’t like to live on the thirteenth floor. My friend Jack has got the same idea.He doesn\’t li

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七年级·英语·填空题阅读判断题

Elephants are the biggest land animals in the world.There are two kinds of elephants,the Asian elephants and the African elephants.Elephants live in parts of Africa and Asia.All the African elephants have tusks(象牙)but on

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七年级·英语·句型转换语法

He will finish the work .(就划线部分提问) ____________will he finish the work?

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七年级·英语·句型转换语法

How about riding a bike to school? (改为同义句) ____________ride a bike to school?

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七年级·英语·填空题社会文化类阅读

In some places,it isn\’t______ (有礼貌的) to look at people when you talk.

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七年级·英语·解答题状语从句

Many people may describe the same person___[\’dɪfrəntlɪ].

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七年级·英语·填空题表语从句

Look!She has a hat on her ______.

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七年级·英语·选择题表语从句

There___________a lot of small flats,but now most of us live in bigger ones.( )

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七年级·英语·选择题表语从句

—I lost my pen.Can you help me __________ it,John? —Sure.Look!It\’s on that chair.( )

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七年级·英语·填空题句型转换

The orange is orange .(对画线部分提问) ______

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