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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
When you are curious about something and want to know more about it,you can use the way of asking questions.Asking questions is the first step to make discoveries and find interesting answers.The following steps can guid
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Mr.and Mrs.Miller lived with a pet dog,Rita.They started a trip with Rita last November.On the seventh day of the trip,Mr.and Mrs.Miller were playing happily by a river when a heavy rain suddenly (突然地)came.At that time t
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We waited an hour for the bus,but it didn\’t ______.( )
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Shubham, (1)______ 13-year-old school boy in California,has made a cheap machine which can help blind people read. Last year,Shubham (2)______(do) some online research.He was surprised to learn that Braille printers (盲人打
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at,turn right,crossing,third,the ______.
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His mother ________ to help him out if he has problems.( )
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-When shall we go and play basketball? -Not until the work ________ tomorrow.( )
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Susan often_______TV on Sunday evening.( )
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They were ____about this _____football match.( )
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When I told the joke,everyone in the room burst into laughter.(paraphrase) =When I told the joke, ______.
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Tony prefers skiing to climbing because he thinks climbing is not as_____as skiing.( )
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礼品店的东西不是很贵,但是我什么都没买. The things in the ______ shop were not so expensive,but I ____________ ______at all.
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spend,yesterday ______
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Jack,_____ play around here.Your mother is sleeping now.( )
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He is so scared that he can't go to sleep. ( 改为同义句) He is ______scared ______go to sleep.
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Transformers:The Last Knight is a famous movie.It is directed by Michael Bay. (合并为一个句子) Transformers:The Last Knight is a famous movie ____________Michael Bay.
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Do you know the woman?The woman has a red bag. ( 合并为一个句子) Do you know the ____________a red bag?
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I think the man is running . (就画线部分提问) ________________________ the man is running?
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(2014•海珠区一模)Shirley Jane Temple was the leading child actor of her time,receiving a special Oscar and acting the leading role in films like Bright Eyes and Heidi. Shirley Jane Temple was born on April 23,1928,in Santa Mo
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I'm Jack,and I am a middle school student.Yesterday was the most exciting day in my life.I was on TV!This is my first time on TV.In the evening,Mum,Dad and I were watching a TV programme in the sitting room and there I w
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