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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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His cheerful joke made us ________our worries.( )
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Read the student\’s ______ (帖子).You can be his friend.
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Andy is good at jumping.In our school sports meeting,he jumps ______(far) than the other boys.
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-When is the English test? -It is ________ nine o\’clock ________ Monday morning.( )
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Maybe you won\’t think you can be the best student.However,anyone can become a better student if he or she wants to.Here\’s some advice. Plan your time carefully.When you plan your week,you should make a list of things t
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My best friend is Ella.She lives two streets away from my house.It takes me 15 minutes to walk to her house.I am a slow walker and I don\’t like walking.If I ride the bike,I can be there in about 5 minutes.Nine times out
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My name is Jane.I love to visit my grandpa\’s farm.I visit it every week.I\’m happy to go there. I love to work on Grandpa\’s farm.I can see the cats and the dogs.I can feed(喂)animals and pick up(捡起)eggs. I love the dogs
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easy invent plenty of tool including Pinyin is a modern (1)______.It was invented in 1958 to help illiterate(不识字的) Chinese to learn how to read.It worked out quite well.(2)______ people learned to read quickly with the h
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When you go out for a business trip or a weekend,you (1)______ have to pack your mobile phone,laptop(手提电脑),MP3 player,camera and so on.It\’s wonderful for you to (2)______ no batteries,no chargers(充电器) and no wires. This
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Which ______(语言) can you speak,English or Chinese?
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①Do you remember the name of your kindergarten teacher?I do,Her name was Mrs.White. ②I don\’t remember much about what we learned in her class,but my mother once told me that we used to write a lot.And I would bring back
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France gets school uniforms The new school term is starting.It\’s time to put on your school uniform and head back to school.For most Chinese pupils,wearing a school uniform is a part of everyday life.But in France,it\’s
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Colourful and rich Chinese culture and fast economic (经济) development make China well-known to people in many(1)______(country) around the world.China is the(2)______(three) largest country in the world in area.China is
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People eat chocolate eggs at ____________.( )
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Lynn was a young doctor.She had a strange experience in June when she was spending Saturday night at her parents\’ house.Whenever she stayed with them,she slept on the long sofa in the sitting room.The sofa was set again
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Red is the color of China.Among all the (1)______,red is most easily seen.The color red is fresh and pure,and in China we call it China Red.Chinese people are attracted by the color red not only because it makes people e
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Do you know what the world\’s tallest animals are?How do they sleep and drink? You may think it\’s difficult for them to sleep,but they have no such problems because giraffes don\’t often stop for a snooze(打盹).As they ar
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The Green family has four people.They all like shopping on the Internet.They think it\’s easy and fun to shop on the Internet. Mr.Green usually buys new books on the Internet.But sometimes he is too busy and has no time
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Zhu Yanjun is 52 years old.Coming from a small village in Gansu,he became a worker after finishing middle school in 1992. Zhu has only a middle school education.However,he surprised everyone by winning second place on CC
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Beijing Opera is one of the oldest operas in the world.It started hundreds of years ago.In Beijing Opera,people sing,act and dance to tell stories.Everything the actors wear,say and do has special meanings. In the past,a
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