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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|}=
精选练习题目
请根据要求改写下列各句,每空一词。 【 1 】 It took workers nine days to build a Fire God Hill Hospital in Wuhan. ( 对划线部分进行提问 ) ________ did it take workers to build a Fire God Hill Hospital( 火神山医院 ) in Wuhan? 【 2 】 My mother bought me a co
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bad weather today is!( )
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海洋塑料已随处可见。 Ocean plastic has ________ ________ everywhere.
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—Do you need any help? —No, thanks. We ______________ a lot of support since last year.
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Customers are asked to make sure that they __________the right change before leaving the shop.
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---What a beautiful garden you have!Your father must be a good gardener. ---Thanks,some flowers ____________ by him in the garden yesterday.( )
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阅读短文,从方框中选择适当的词并用其正确形式填空,使短文通顺、意思完整.每空限填一词,每词限用一次. realize you what possible know mind plan brave hard dream Life is full of ups and downs.Sometimes we have to be our own light to make our own life bright. When I was in
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The long waiting time outside the school gate makes the parents grow ______ (急躁的).
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John Thomas was a student,but he had been a famous champion(冠军).Everybody at Boston University liked this tall,quiet boy.Once he was hurt,everybody at Boston University was(1)______.People all over the country(2)______ab
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I have a rule for travel:Never carry a map.I\’d like to ask for directions. Foreign visitors are often (1)______ in Japan because most streets there don\’t have names.In Japan,people use landmarks(地标) for their direction
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Jack had a r ______(仓促) to catch the bus and didn\’t have time to say goodbye.
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Last week,my grandma came to visit us.Mom booked (预定) a table at a restaurant for us to have dinner together. Once we took our seats,the waitress came to us with two (1)______.She passed one to me and the other to Grandm
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—Excuse me,could you tell me ________ —Sure,at eight o\’clock tomorrow morning.Don\’t be late!( )
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Each school day,yellow school buses take millions of American kids to and from school. According to the law,school buses must be painted "school bus(1)______".You may not find it in a box of crayons.The colour is neither
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Could you tell me?Did they come back last night? (保持句意不变) Could you tell me ______ they ______ back last night?
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As the saying goes that every family has their problems.The most common family problem lies in(存在于) the communication between parents and children.Here are a few examples. Parent:Mike is always making trouble in school.Y
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Qi Baishi was born in(1)______ poor family from Xiangtan,Hunan province.He was at school for less than a year because of(2)______(ill).One day,he found a Chinese painting guide book-Jieziyuan Huapu.The book inspired his
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A group of young people who wear ancient clothes,walking on the streets of Paris,became a scene of the Paris Olympic Games.They are not actors or actresses in a movie,but hanfu lovers.Hanfu,traditional Chinese clothing,i
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weigh heavy early nothing course carry everyone like correct lay expression A psychologist (心理学家) stood in the front of a classroom.She was giving a(an) (1)______ in psychology,and all the students listened carefully in
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中国高铁世界闻名.(完成译句) China is____________ its high-speed railway in the world.
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