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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
exciting information!We will visit Shanghai Disneyland in a month.( )
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I\’d like to play basketball with him. (改为一般疑问句) ______ you ______ to play basketball with him?
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—Excuse me,are you Jane? — .I am Maria.( )
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-Would you like ______(become) a designer,Sandy? -Yes,I\’d like to.
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—Is your name Peter? — .( )
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He is my class teacher.(改为一般疑问句) __________________class teacher?
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There is some food on the table.(变为一般疑问句) ______
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My name is Liu Mei.I am twelve.I have some (1)______.They are Mike,Mary,Jack,Peter and Kate.We are middle school students.Mike,Mary and Jack are in the same(相同的) (2)______.They are in Class 2,Grade 7.Kate,Peter and I are
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Hi,everyone.My name is Quan Hongchan.Hongchan is my first name and Quan is my(1)______name.I\’m 17 years old now.I live(2)______Guangdong,China.I have a big family.There are(3)______people in my family,my grandfather,my
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—Are you Gina? — ________,I am.( )
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Let\’s walk to the cinema. (改为同义句) Let\’s go to the cinema____________.
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The twins never go to the library at weekends.(改为反意疑问句) The twins never go to the library at weekends, ____________?
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We had lunch at home yesterday.(改为一般疑问句) ______you ______lunch at home yesterday?
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How many ______(potato) can you see in the picture?
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Are these your books?(作肯定回答) Yes, ____________.
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It is on the desk. (主语变为复数) ____________ on the desk.
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We need to ______ /dɪˈskʌs/ to have a picnic this weekend.
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Read the student\’s ______ (帖子).You can be his friend.
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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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