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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|}=
精选练习题目
连词成句:fix,thanks,for,the,me,machine,helping,washing ______
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One day a donkey and his owner were walking down the road.They met a(1)______ on the road. The traveler wanted to hire the donkey.The owner agreed to have the donkey(2)______ the man to the next village. The traveler cli
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wonder,you,I,us,help,whether,can ______.
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Life today can be very stressful.Children need a break from the pressures(压力) and demands(需求) of their busy schedule.But(1)i ______ of letting children relax in front of the TV,parents should encourage them to do somethi
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We went c ______ (野营) beside the river last Monday.
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---Are your parents against your leaving home to work in Shanghai? ---________.They say there are more chances in big cities.( )
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Liu Yang,born in 1978,is China\’s first woman astronaut(宇航员).She wrote a letter to her two children before she went into space(太空) for the second time in 2022.Here is the letter. "I love you very much.I didn\’t want you
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Lee loved tennis.He got a few old tennis balls and an old racquet(球拍) from his grandfather,who used to play tennis a long time ago. Lee hoped that he would become an Olympics (1)______one day. However,there was one(2)___
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Language is important both because of what it communicates and how it does the communication.The power of language is so strong that it shows how language can actually influence(影响) the way we think.We can see this in ch
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When you feel u ______,hang out with friends and enjoy a big meal.
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When ______Amy often ______(wash) her clothes?
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Swifts(雨燕) live mostly in the air.These small birds are among the fastest animals on Earth.In fact,swifts can go two or three days without touching the ground!To get used to life in the sky,swifts use their speed and the
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A:Li Yue,I really worry about your trip to Beijing.So I still(1)______a tour around nearby cities.I wonder if you can change the plan. B:Come on,Mom.I know Chinese parents normally worry the first time their children tra
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As teenagers,maybe most of us do not enjoy doing housework.We hate to do it because it is not as interesting as other activities.We often think it is parents\’ duty to take care of the whole family.But I think it\’s our
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He is more interested in English than his brother.( )
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I like English. What about ______?( )
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Alice was very excited.One of her favorite writers had just published(出版)a new book.She saved her money,and she was ready to buy the book this weekend.She talked about the book with her online chat group (聊天群).A lot of t
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on,Liuyi Road ______
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It often ______ here in summer.Look!It\’s ______ hard now.( )
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There______ ( be ) some water in the glass.
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