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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|}=
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Once you open the book,you will become a good speaker.Susan Weinschenk's excellent ideas on how to make a perfect speech are very helpful to you.With the help of the book,you will be confident to know how to give your sp
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(2015•泉州)Here is a book that is easy to read,but it is on a big subject.The book is named Animal Farm (1945).It is by the English writer George Orwell.It is a story about farm animals.They are tired of the farmer,Mr.Jone
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-I like the weather in Yunnan. It's warm all year long. - Yes. And the temperature stays __________ zero all the time there.( )
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One of the difficulties we have English is how to remember new words and expressions.( )
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I would like to see a film this evening, but things are _________ my control and I have to work.( )
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Though there are so many things around us that go __________ our will, we can't give up because following the dream is valuable.( )
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China is an important (亚洲的) country.
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It is said that every year on the second day of the second lunar month,the dragon wakes up and raises its head.Because of this,the day is called"Dragon Head-raising Day"(Longtaitou).This year,it falls on March 11.Old peo
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A:Wang Na,how many popular festivals are there in your country? B:There are many,such as the Lantern Festival,the Dragon Boat Festival,the Double Ninth Festival and so on. A:(1)______ B:The Double Ninth Festival,I think.
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The New Year\’s Eve dinner is a time for people in China to their family and friends and show hope for the coming year.( )
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Every year,some inventions are making the world better and a bit more fun.Let\’s see some of them. A girl in hospital had hardly eaten anything for two days.The nurse took Robin,a robot,into the girl\’s room.After chatti
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Falling on the 24th day of the sixth lunar (农历) month,the Torch (火把) Festival is an important and traditional event for the Yi ethnic group (彝族) in Southwest China.Cheering,singing and dancing,local Yi people and the tou
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-I like this set of sofa so much,but I don't know it in my small house. -You're supposed to put it in the living room.( )
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My neighbor won't stop ____ noises at midnight.Can you give me some suggestions on _________?( )
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You should keep the window because the room is too hot.( )
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-Simon.I hear you are going abroad for further study.Have you decided ______? -Next September.( )
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The sentence structure(结构)of"He often makes me laugh"is _________.( )
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The sentence structure of"We must keep our classroom clean and tidy."is ______.( )
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